Method, apparatus, and process for manufacturing metal-plastic laminates with molecular bonding

Abstract

An apparatus for manufacturing a metal-plastic laminate according to various embodiments of the present invention is disclosed. An apparatus for manufacturing a metal-plastic laminate comprises: a surface modification device for modifying the surfaces of a plastic member and a metal member to form functional groups; an adhesive coating device for coating an adhesive on at least one surface modified surface of the surface-modified plastic member and the metal member; and a laminator for laminating the metal member and the plastic member; wherein the adhesive coating device is a gravure offset printing coater.

Description

Technology Field

[0001] The present invention aims to provide a method, apparatus, and process for manufacturing a metal-plastic laminate. Background Technology

[0003] In the modern mobility and automotive industries, the use of composite films combining plastics and metals is rapidly increasing to achieve lightweighting, improved fuel efficiency, and the realization of various electronic functionalities. In particular, films such as Flexible Copper Clad Laminate (FCCL) and battery pouch films are critically used in electric vehicle battery management systems (BMS), in-vehicle displays, sensor networks, and various electronic components for autonomous driving. Consequently, active efforts are being made to maximize the advantages of each material by bonding a copper layer, which provides electrical conductivity, with plastic substrates such as polyimide (PI) or polyethylene terephthalate (PET), which offer excellent flexibility and insulation.

[0004] Conventional plastic-metal film bonding technologies for automobiles have primarily utilized methods such as thermal compression and adhesion enhancement through chemical etching. While the thermal compression method joins two materials by applying high temperature and pressure, the extreme temperature changes (-40°C) that occur during vehicle operation... There are disadvantages such as delamination due to differences in the coefficient of thermal expansion according to ℃, deformation of the plastic substrate due to the high-temperature environment of the engine compartment, and instability of the bonding interface in a vehicle environment where vibration and shock are repeated. In the case of chemical etching methods, although the mechanical anchoring effect is enhanced by increasing the roughness of the copper surface, there are limitations such as large quality variations due to minute changes in etching conditions in the mass production environment of the automobile manufacturing process and the potential to cause chemical waste disposal problems in the automotive industry where environmental regulations are becoming stricter.

[0005] Although lamination methods using adhesives provide relatively superior bonding performance compared to the aforementioned methods, they still have several technical limitations. In conventional adhesive bonding methods, the bonding between the adhesive, the copper layer, and the plastic substrate relies primarily on physical adsorption or mechanical anchoring; consequently, bonding strength may deteriorate or interlayer delamination may occur in harsh driving environments such as high temperature, high humidity, salt spray, and repeated bending and twisting. Furthermore, if the thickness of the adhesive layer is uneven or excessively thick, it may lead to a deterioration in the electrical characteristics of automotive electronic systems or worsen installation and maintainability due to reduced flexibility of the film.

[0006] In particular, FCCL films are used in flexible electronic components such as dashboard displays, infotainment systems, and head-up displays (HUDs) within vehicles, and battery pouch films are used as exterior materials for high-capacity lithium-ion battery packs in electric and hybrid vehicles; therefore, maintaining electrical reliability and chemical stability over a service life of more than 15 years is a critical requirement. To achieve this, molecular-level bonding technology involving chemical bonding between the adhesive and each layer is required. Furthermore, there is a need to develop manufacturing technology capable of realizing bonding performance and electrical characteristics that satisfy the automotive industry's stringent quality standards (ISO / TS 16949, AEC-Q100, etc.) through precise application of the adhesive and a controlled curing process.

[0007] Furthermore, existing methods have limitations in that it is difficult to control the uniformity of the ultrathin adhesive layers required for automotive electronic components, and quality defects caused by air bubbles or the ingress of foreign substances during mass production can directly impact vehicle safety. Therefore, there is an urgent need to develop a new manufacturing technology that enables nanometer-level precision and uniform adhesive application suitable for the automotive industry's Just-In-Time production system, while simultaneously ensuring continuous mass production and quality stability.

[0008] In this regard, Korean registered patent No. 10-2718642 discloses a metal-polymer bonding method. The problem to be solved

[0010] The present invention is conceived in response to the aforementioned background technology and aims to provide a method, apparatus, and process for manufacturing a metal-plastic laminate with molecular bonding applied. Specifically, a method, apparatus, and process for manufacturing a metal-plastic laminate with molecular bonding applied using a gravure offset printing coater can be provided.

[0011] The technical problems of the present invention are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0013] According to one embodiment of the present invention for solving the problem described above, an apparatus for manufacturing a metal-plastic laminate may be provided, comprising: a surface modification device for modifying the surfaces of a plastic member and a metal member to form functional groups; an adhesive coating device for coating an adhesive on at least one surface modified surface of the surface-modified plastic member and the metal member; and a laminator for laminating the metal member and the plastic member, wherein the adhesive coating device is a gravure offset printing coater.

[0014] Additionally, the gravure offset printing coater may include: a blanket roller on which an adhesive is applied to a surface and which transfers the applied adhesive to a surface of the coating target by rotating in one direction while in contact with a surface of the coating target; and a gravure offset printing roller that transfers the adhesive to the blanket roller in a pre-formed pattern.

[0015] Additionally, the blanket roller may include an outer skin made of a material of a predetermined hardness and containing a cylindrical space inside; and an inner skin filled in the inner space of the outer skin and made of a material of lower hardness than the outer skin.

[0016] In addition, the thickness of the outer skin may be thinner than the thickness of the inner skin.

[0017] In addition, the surface modification device may include at least one of an oxygen plasma device, a UV generator, and a corona generator, and the functional group may include at least one of a hydroxyl group and an amino group.

[0018] In addition, the surface modification device can form amino groups by reacting a surface modification compound with a hydroxyl group formed on the surface of the plastic member and the metal member.

[0019] In addition, the adhesive may include a diglidyl ether compound and a diamine compound.

[0020] In addition, the adhesive may include a diisocyanate compound.

[0021] In addition, the apparatus for manufacturing the metal-plastic laminate further includes a drying device for drying a member coated with the adhesive, and the drying device can dry the coated adhesive until it reaches a thickness of 10 nm or less.

[0022] In addition, the device for manufacturing the metal-plastic laminate may further include a cleaning device for cleaning the plastic member and the metal member prior to surface modification.

[0023] In addition, the adhesive coating device may include a first adhesive coating device that applies an adhesive to one surface of a plastic member.

[0024] In addition, the adhesive coating device may include a second adhesive coating device that applies adhesive to one surface of a metal member.

[0025] In addition, the adhesive coating device may include a first adhesive coating device for applying adhesive to one surface of a plastic member and a second adhesive coating device for applying adhesive to one surface of a metal member.

[0026] In addition, the device for manufacturing the metal-plastic laminate may further include a forming device for molding the laminated member.

[0027] Another embodiment of the present disclosure for solving the aforementioned problem may include a method for manufacturing a metal-plastic laminate, comprising: a step of modifying the surfaces of a plastic member and a metal member using a surface modification device to form functional groups; a step of coating an adhesive on at least one surface-modified surface of the surface-modified plastic member and the metal member using a gravure offset printing coater; and a step of laminating the metal member and the plastic member using a laminator.

[0028] Additionally, the gravure offset printing coater may include: a blanket roller on which an adhesive is applied to a surface and which transfers the applied adhesive to a surface of the coating target by rotating in one direction while in contact with a surface of the coating target; and a gravure offset printing roller that transfers the adhesive to the blanket roller in a pre-formed pattern.

[0029] Additionally, the blanket roller may include an outer skin made of a material of a predetermined hardness and containing a cylindrical space inside; and an inner skin made of a material of lower hardness than the outer skin, filled in the inner space of the outer skin.

[0030] Another embodiment of the present disclosure for solving the aforementioned problem may provide a process for manufacturing a metal-plastic laminate, comprising: a process in which a surface modification device modifies the surfaces of a plastic member and a metal member to form functional groups; a process in which a gravure offset printing coater coats an adhesive onto at least one surface modified surface of the surface-modified plastic member and the metal member; and a process in which a laminator laminates the metal member and the plastic member.

[0031] Additionally, the gravure offset printing coater may include: a blanket roller on which an adhesive is applied to a surface and which transfers the applied adhesive to a surface of the coating target by rotating in one direction while in contact with a surface of the coating target; and a gravure offset printing roller that transfers the adhesive to the blanket roller in a pre-formed pattern.

[0032] Additionally, the blanket roller may include an outer skin made of a material of a predetermined hardness and containing a cylindrical space inside; and an inner skin filled in the inner space of the outer skin and made of a material of lower hardness than the outer skin. Effects of the invention

[0034] According to the present invention, a method, apparatus, and process for manufacturing a metal-plastic laminate having improved bonding strength and durability compared to conventional physical bonding methods can be provided.

[0035] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by a person skilled in the art from the description below. Brief explanation of the drawing

[0037] FIGS. 1 to 3 are drawings illustrating an apparatus according to an embodiment of the present invention. FIG. 4 is a drawing for explaining how a plastic member and a metal member are combined according to one embodiment of the present disclosure. FIG. 5 is a drawing for illustrating a method of manufacturing a metal-plastic laminate according to one embodiment of the present disclosure. FIG. 6 is a drawing for explaining a bar coater-embedded slot die according to one embodiment of the present disclosure. FIGS. 7 to 9 are drawings for explaining a slot die coater with a gravure roller embedded therein and a microchannel applied according to one embodiment of the present disclosure. FIG. 10 is a conceptual diagram illustrating a gravure roller according to one embodiment of the present disclosure. FIG. 11 is a drawing for illustrating an air hybrid electrostatic spray coating apparatus according to one embodiment of the present disclosure. FIGS. 12 to 14 are drawings for explaining an air hybrid electrostatic spray coating device equipped with an air curtain according to one embodiment of the present disclosure. FIG. 15 is a drawing for explaining a surface elastic wave coating apparatus according to one embodiment of the present disclosure. Figures 16 and 17 are diagrams illustrating how a voltage application module supplies voltage to electrodes. FIG. 18 is a drawing for explaining a gravure offset printing coater according to one embodiment of the present disclosure. FIG. 19 is a drawing for explaining a double blanket of a gravure offset printing coater according to one embodiment of the present disclosure. FIG. 20 is a drawing for explaining a computing module according to one embodiment of the present disclosure. FIG. 21 is a drawing illustrating a method for determining process conditions of an electrostatic spray coating device using an artificial intelligence model according to one embodiment of the present disclosure. FIG. 22 is a diagram illustrating training data for training an artificial intelligence model for an electrostatic spray coating device according to one embodiment of the present disclosure. FIG. 23 is a drawing illustrating a method for determining process conditions of a surface acoustic wave coating device using an artificial intelligence model according to one embodiment of the present disclosure. FIG. 24 is a diagram illustrating training data for training an artificial intelligence model for a surface acoustic wave coating device according to one embodiment of the present disclosure. FIG. 25 is a schematic diagram showing an artificial neural network according to one embodiment of the present disclosure. FIG. 26 is a drawing for illustrating a method, apparatus, and process for manufacturing a metal-plastic laminated FCCL film according to one embodiment of the present disclosure. FIG. 27 is a drawing for explaining a method, apparatus, and process for manufacturing a metal-plastic laminated automotive battery pouch film according to one embodiment of the present disclosure. FIG. 28 is a drawing for explaining surface modification according to another embodiment of the present disclosure. FIG. 29 is a drawing for explaining the components of an adhesive according to another embodiment of the present disclosure. FIG. 30 is a drawing for explaining that a plastic member and a metal member are bonded by forming a molecular bond according to one embodiment of the present disclosure. FIG. 31 is a drawing illustrating that a plastic member and a metal member are bonded by forming a molecular bond according to another embodiment of the present disclosure. FIG. 32 is a drawing illustrating that a plastic member and a metal member are bonded by forming a molecular bond according to another embodiment of the present disclosure. FIG. 33 is a drawing illustrating that a plastic member and a metal member are bonded by forming a molecular bond according to another embodiment of the present disclosure. Specific details for implementing the invention

[0038] Various embodiments are now described with reference to the drawings. In this specification, various descriptions are provided to facilitate an understanding of the invention. However, it is evident that these embodiments can be practiced without such specific descriptions.

[0039] As used herein, terms such as “component,” “module,” “system,” etc. refer to computer-related entities, hardware, firmware, software, combinations of software and hardware, or executions of software. For example, a component may be, but is not limited to, a procedure executed on a processor, a processor, an object, an execution thread, a program, and / or a computer. For example, both an application executed on a computing device and the computing device itself may be a component. One or more components may reside within a processor and / or an execution thread. A component may be localized within a single computer. A component may be distributed among two or more computers. Additionally, these components may be executed from various computer-readable media having various data structures stored therein. Components may communicate through local and / or remote processes, for example, according to signals having one or more data packets (e.g., data from a component interacting with another component in a local system or distributed system, and / or data transmitted through signals to other systems and networks such as the Internet).

[0040] Furthermore, the term "or" is intended to mean an implicit "or" rather than an exclusive "or." That is, unless otherwise specified or evident from the context, "X uses A or B" is intended to mean one of the natural implicit substitutions. In other words, if X uses A; if X uses B; or if X uses both A and B, "X uses A or B" may apply to any of these cases. Additionally, the term "and / or" as used herein should be understood to refer to and include all possible combinations of one or more of the enumerated related items.

[0041] Additionally, the terms “comprising” and / or “comprising” should be understood to mean that such features and / or components are present. However, the terms “comprising” and / or “comprising” should be understood not to exclude the presence or addition of one or more other features, components and / or groups thereof. Furthermore, unless otherwise specified or clearly evident from the context to indicate a singular form, the singular in this specification and claims should generally be interpreted to mean “one or more.”

[0042] Those skilled in the art should recognize that the various exemplary logical blocks, configurations, modules, circuits, means, logics, and algorithmic steps described in connection with the embodiments disclosed herein may be implemented in electronic hardware, computer software, or a combination of both. To clearly exemplify the interchangeability of hardware and software, various exemplary components, blocks, configurations, means, logics, modules, circuits, and steps have been generally described above in terms of their functionality. Whether such functionality is implemented in hardware or software depends on the specific application and design constraints imposed on the overall system. Skilled technicians may implement the described functionality in various ways for each specific application. However, such decisions regarding implementation should not be interpreted as moving out of the scope of the invention.

[0043] The description of the presented embodiments is provided to enable those skilled in the art to use or practice the present invention. Various modifications to these embodiments will be apparent to those skilled in the art. The general principles defined herein may be applied to other embodiments without departing from the scope of the present invention. Thus, the present invention is not limited to the embodiments presented herein. The present invention should be interpreted in the broadest possible scope consistent with the principles and novel features presented herein.

[0044] In this specification, the term "computer" refers to any type of hardware device comprising at least one processor, and may be understood to include software configurations operating on said hardware device according to the embodiments. For example, the term "computer" may be understood to include smartphones, tablet PCs, desktops, laptops, and user clients and applications running on each of these devices, but is not limited thereto.

[0045] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0046] Each step described in this specification is described as being performed by a computer, but the subject of each step is not limited thereto, and depending on the embodiment, at least some of each step may be performed on different devices.

[0047] FIGS. 1 to 3 are drawings illustrating an apparatus according to an embodiment of the present invention.

[0048] Referring to FIGS. 1 to 3, an apparatus for manufacturing a metal-plastic laminate according to one embodiment of the present invention may include at least one of a first grinder (1001), a second grinder (1002), a first cleaning device (1011), a second cleaning device (1012), a first surface modification device (1021), a second surface modification device (1022), a first adhesive coating device (1031), a second adhesive coating device (1032), a first drying device (1041), a second drying device (1042), a laminator (105), a forming device (106), and a rewinder (1003).

[0049] According to one embodiment of the present disclosure, an apparatus for manufacturing a metal-plastic laminate can manufacture a metal-plastic laminate by combining a plastic member and a metal member.

[0050] In this case, the metal-plastic laminate may include, but is not limited to, a Flexible Copper Clad Laminate (FCCL) composed of copper and a polyimide film, a battery pouch composed of an aluminum film and a nylon / CPP film, an EMI shielding film composed of copper and a PET film, an automotive interior material composed of a stainless steel foil and a polycarbonate film, a food packaging material composed of an aluminum foil and a polypropylene film, a heating element for a heater composed of a nickel foil and a polyimide film, a medical implant material composed of a titanium foil and a PTFE film, a heat dissipation material composed of a copper foil, a graphite sheet and a PET film, a conductive film for an antenna composed of a silver foil and a polyester film, a moisture-proof sheet for construction composed of an aluminum foil and a PE film, a circuit board material for high frequency composed of a copper foil and a liquid crystal polymer (LCP) film, a heat-resistant material for aerospace, a high-temperature electronic component material, etc., and may include various members in which a plastic member and a metal member are laminated.

[0051] The plastic components include polyimide (PI) film, polyethylene terephthalate (PET) film, polypropylene (PP) film, polyethylene (PE) film, nylon (PA) film, polycarbonate (PC) film, polyvinyl chloride (PVC) film, polyurethane (PU) film, polystyrene (PS) film, acrylonitrile-butadiene-styrene (ABS) film, polyoxymethylene (POM) film, polyphenylene oxide (PPO) film, polyetheretherketone (PEEK) film, polytetrafluoroethylene (PTFE) film, polyvinylidene chloride (PVDC) film, ethylene vinyl alcohol (EVOH) film, cyclic olefin copolymer (COC) film, liquid crystal polymer (LCP) film, polyetherimide (PEI) film, polyphenylene sulfide (PPS) film, polybutylene terephthalate (PBT) film, polylactic acid (PLA) film, Various materials may be included, but are not limited to, polybutylene adipate terephthalate (PBAT) film, thermoplastic polyurethane (TPU) film, ethylene propylene diene monomer (EPDM) film, cast polypropylene (CPP) film, etc.

[0052] The metal member may include, but is not limited to, various metal materials such as aluminum (Al), aluminum alloy, stainless steel, carbon steel, alloy steel, high-strength steel, magnesium (Mg), magnesium alloy, titanium (Ti), titanium alloy, zinc (Zn), zinc alloy, copper (Cu), and copper alloy.

[0053] The first unwinder (1001) is equipped with a roll wound with a plastic member and can continuously supply film. This device controls the rotation of the plastic film roll and unwinds the film at a constant speed and tension, transferring it to a subsequent process. The second unwinder (1002) is equipped with a roll wound with a metal member and can supply metal film in the same manner. Both unwinders include a tension control device to maintain constant tension of the film and perform the role of stably supplying the film so that it does not wrinkle or get damaged.

[0054] The cleaning device (1011, 1012) can clean plastic members and metal members. For example, the first cleaning device (1011) can clean plastic members, and the second cleaning device (1012) can clean metal members. Although the first cleaning device (1011) and the second cleaning device (1012) have been described separately for convenience of explanation, according to one embodiment of the invention, the device for cleaning plastic members and the device for cleaning metal members may be the same.

[0055] The cleaning device (1011, 1012) can perform the role of improving the efficiency of the subsequent surface modification process by removing contaminants present on the surface of the plastic member and the metal member. Surface contaminants may include cutting fluid, rust-preventive oil, release agent, dust, particulate matter, oxide film, organic residue, etc. generated during the processing process, and these contaminants may interfere with the formation of functional groups during the surface modification process, thereby degrading molecular bonding performance.

[0056] The cleaning device may include at least one of a solvent cleaning method, an ultrasonic cleaning method, a plasma cleaning method, and an alkaline cleaning method. In the case of a solvent cleaning method, organic solvents such as isopropyl alcohol (IPA), acetone, methyl ethyl ketone (MEK), and toluene, or water-based cleaning agents containing surfactants may be used. For plastic components, mild cleaning conditions may be applied considering the chemical stability of the material, and for metal components, relatively strong cleaning conditions may be applied to remove the oxide film.

[0057] Ultrasonic cleaning methods can effectively remove even fine contaminants by utilizing the cavitation effect in a frequency range of 20-100 kHz, while plasma cleaning methods can decompose and remove organic contaminants using low-temperature atmospheric pressure plasma. After cleaning, residual cleaning agents or moisture can be completely removed through a pure water (DI water) rinse and a drying process using nitrogen gas to ensure an optimal surface condition.

[0058] The surface modification device (1021, 1022) can modify the surface of a plastic member and a metal member to form functional groups on the surface of the plastic member and the metal member. For example, the first surface modification device (1021) can modify one surface of a plastic member to form functional groups, and the second surface modification device (1022) can modify one surface of a metal member to form functional groups.

[0059] The surface modification device (1021, 1022) can improve chemical bonding strength with the adhesive by introducing reactive functional groups into the plastic member and the metal member through physical or chemical methods. For example, the surface modification device (1021, 1022) can form at least one functional group among a hydroxyl group (-OH), a carboxyl group (-COOH), a carbonyl group (C=O), and an amino group (NH2) on the surface of the plastic member and the metal member.

[0060] In this case, the surface modification device (1021, 1022) can be implemented as at least one of an oxygen plasma device, a UV generator, and a corona generator.

[0061] For example, the surface modification device (1021, 1022) can form hydroxyl groups (-OH) on the surface of a plastic member and a metal member by applying oxygen plasma for 30 to 120 seconds. Specifically, the surface modification device (1021, 1022) can form hydroxyl groups (-OH) on the surface of a plastic member and a metal member by applying oxygen plasma for 30 to 120 seconds at an RF frequency of 13.56 MHz with an output of 50 to 200 W.

[0062] As another example, a surface modification device (1021, 1022) can form hydroxyl groups (-OH) on the surface of a plastic member and a metal member by irradiating UV light for 10 to 30 minutes. Specifically, the surface modification device (1021, 1022) can form hydroxyl groups on the surface by irradiating UV light of wavelengths of 185 nm and 254 nm for 10 to 30 minutes at an intensity of 10-50 mW / cm².

[0063] As another example, the surface modification device (1021, 1022) can form hydroxyl groups on the surface of a plastic member and a metal member by generating a corona discharge for 60 to 120 seconds. Specifically, the surface modification device (1021, 1022) can form hydroxyl groups on the surface of a plastic member and a metal member by applying a high voltage of 10-30 kV to the electrode to generate a corona discharge for 60 to 120 seconds.

[0064] As another example, the surface modification device (1021, 1022) can form functional groups through a chemical method. For example, the surface modification device (1021, 1022) exposes a plastic member and / or a metal member to oxygen plasma treatment. For example, the surface modification device (1021, 1022) can form hydroxyl groups (-OH) on the surface of the plastic member and / or metal member by exposing it at room temperature for 30 seconds to 180 seconds. Additionally, the member with the formed hydroxyl groups can be treated with an APTES (3-aminopropyltriethoxysilane) solution. APTES is a silane coupling agent and can be reacted in an ethanol (EtOH) solvent at room temperature for 24 hours. In this process, the ethoxy group (-OEt) of the APTES molecule undergoes a condensation reaction with the hydroxyl group on the substrate surface to form a siloxane bond (-Si-O-), and at the same time, the amino group (-NH2) of APTES is exposed on the surface to form an amino group (NH2).

[0065] Referring to FIGS. 1 to 3, the first surface modification device (1021) can form functional groups on the surface of a plastic member, and the second surface modification device (1022) can form functional groups on the surface of a metal member.

[0066] The adhesive coating device (1031, 1032) can coat an adhesive on one side of a surface-modified member. For example, the first adhesive coating device (1031) can coat an adhesive on one side of a surface-modified plastic member. Additionally, the second adhesive coating device (1032) can coat an adhesive on one side of a surface-modified metal member.

[0067] According to one embodiment of the present disclosure, a metal-plastic laminate manufacturing apparatus (100) can coat an adhesive on a surface-modified surface of at least one of a plastic member and a metal member. For example, referring to FIG. 1, the metal-plastic laminate manufacturing apparatus (100) may include a first adhesive coating apparatus (1031), and the first adhesive coating apparatus (1031) can coat an adhesive on a surface-modified surface of a plastic member.

[0068] For another example, referring to FIG. 2, the metal-plastic laminate manufacturing device (100) may include a second adhesive coating device (1032), and the second adhesive coating device (1032) may coat an adhesive on a surface-modified one side of a metal member.

[0069] For another example, referring to FIG. 3, the metal-plastic laminate manufacturing device (100) may include a first adhesive coating device (1031) and a second adhesive coating device (1032), the first adhesive coating device (1031) may perform a coating on one surface modified of a plastic member, and the second adhesive coating device (1032) may perform a coating on one surface modified of a metal member.

[0070] In this case, the adhesive coating device (1031, 1032) may be implemented as one of an electrostatic spray coating device (ESD), a slot die coater with a microgravure coater, a surface elastic wave coating device, or a double blanket gravure offset printing coater, but is not limited thereto.

[0071] In this specification, the electrostatic spray coating device is used as a concept including an electrostatic spray coating device (ESD) and an electrostatic spray coating device equipped with an air curtain.

[0072] Additionally, the terms used in this specification may be used interchangeably, and specifically, terms such as "electrostatic spray coating device," "electrostatic spray coating device equipped with an air curtain," "ESD device," "electrostatic spray system," "electrostatic coating device," "air curtain electrostatic spray system," and "air curtain ESD device" may be interpreted as interchangeable concepts referring to one another depending on the context.

[0073] In addition, terms such as "adhesive coating," "adhesive application," "adhesive spraying," and "adhesive application" refer to the process of uniformly spraying adhesive onto a film surface using an electrostatic spraying method and may be used interchangeably; similarly, terms such as "FCCL film," "flexible copper clad laminate," and "copper laminate film," as well as terms such as "battery pouch film," "battery outer film," and "pouch-type battery film," may also be used for mutual reference.

[0074] Accordingly, it is specified that mutual reference and substitution of the above terms are possible in interpreting this specification, for the purpose of clarifying the technical scope of the invention and facilitating understanding.

[0075] The detailed coating method is described in detail below.

[0076] According to one embodiment of the present invention, the thickness of the adhesive applied by the adhesive coating device (1031, 1032) can be controlled to 50 μm or less. In order to effectively implement chemical bonding at the molecular level, it is essential to precisely control the thickness of the adhesive layer, and the specific configuration of the adhesive coating device for this purpose is described in detail below.

[0077] According to one embodiment of the present disclosure, a metal-plastic laminate manufacturing apparatus (100) may include a drying apparatus (1041, 1042). For example, the metal-plastic laminate manufacturing apparatus (100) may include at least one of a first drying apparatus (1041) and a second drying apparatus (1042).

[0078] The first drying device (1041) is positioned at the rear end of the first adhesive coating device (1031) to dry the adhesive applied to the plastic member. As a result, the solvent of the adhesive applied to the plastic member evaporates, and the adhesive applied to the plastic member can be formed with a thickness of 10 nm or less.

[0079] The second drying device (1042) is positioned at the rear end of the first adhesive coating device (1032) to dry the adhesive applied to the metal member. As a result, the solvent of the adhesive applied to the metal member evaporates, and the adhesive applied to the metal member can be formed with a thickness of 10 nm or less.

[0080] Referring to FIG. 1, the metal-plastic laminate manufacturing device (100) may include a first drying device (1041); referring to FIG. 2, the metal-plastic laminate manufacturing device (100) may include a second drying device (1042); and referring to FIG. 3, the metal-plastic laminate manufacturing device (100) may include the first drying device (1041) and the second drying device (1042).

[0081] The drying device (1041, 1042) may be implemented using at least one of a room temperature drying method, a hot air drying method, an infrared (IR) drying method, a microwave drying method, or an ultraviolet (UV) drying / curing method. For example, the drying device (1041, 1042) may dry a plastic member and / or a metal member at room temperature for 12 hours. Additionally, the drying device (1041, 1042) may be 60-120 The solvent can be evaporated from the surface of the adhesive by circulating air heated to a certain temperature. Additionally, the drying device (1041, 1042) can perform drying by directly heating the adhesive layer by irradiating infrared rays with a wavelength of 2-10 μm. Additionally, the drying device (1041, 1042) can induce a chemical curing reaction while simultaneously evaporating the solvent of the adhesive by irradiating ultraviolet rays in the range of wavelengths of 254-400 nm. Additionally, the drying device (1041, 1042) can evaporate the solvent by using microwaves of 2.45 GHz to vibrate polar solvent molecules inside the adhesive.

[0082] According to another embodiment of the present disclosure, the adhesive coating device (1031, 1032) may be omitted (not shown). Additionally, the drying device (1041, 1042) may also be omitted. For example, depending on the surface modification method used in the surface modification device (1021, 1022), the adhesive coating process may be omitted, and when the adhesive coating process is omitted, the metal-plastic laminate manufacturing device (100) may not include the adhesive coating device (1031, 1032) and the drying device (1041, 1042).

[0083] The laminator (105) can laminate a plastic member and a metal member. In this case, the surface-modified side of the plastic member and the surface-modified side of the metal member can be combined.

[0084] For example, the laminator (105) can perform lamination by applying pressure of 10 to 15 MPa for 9 to 12 hours using upper and lower flat plate presses. In this case, the pressure plate can be heated to 60 to 120 degrees to promote molecular bonding. Specifically, the laminator (105) can perform lamination by applying pressure of 10 to 15 MPa for 12 hours using a pressure plate heated to 90 degrees.

[0085] As another example, the laminator (105) can be implemented as a roll laminator. The laminator (105) implemented as a roll laminator can improve productivity through a continuous lamination process. The roll laminator can perform lamination by applying pressure and heat simultaneously while passing a plastic member and a metal member between upper and lower rollers.

[0086] Specifically, the rollers of the roll laminator can be set to a line pressure of 1 to 5 MPa, and the roller surface temperature can be heated to 80 to 150 degrees. The feed speed of the roll laminator can be controlled to process for 30 to 60 minutes and can be optimized according to the thickness and physical properties of the material to be laminated.

[0087] The forming device (105) can form a composite member in which a plastic member and a metal member are laminated. For example, the forming device (105) can form a laminated member by using a mold heated to 120 to 200 degrees, applying pressure of 40 to 60 MPa for 30 minutes, and cooling with water.

[0088] In this case, the forming device (105) can cut the laminated member. Specifically, it can cut in a shape such as a punch. For example, the forming device (105) can precisely cut the laminated member into a circular, square, or complex contour shape at a preset location when the laminated member is continuously supplied. The processed member produced in this cutting process can be separated from the forming device (105) via a separate transfer conveyor or collection device and transported to a designated storage location, and can be systematically stored via an automatic loading system as needed.

[0089] The rewinder (1003) is a device that winds a laminate into a roll. The rewinder (1003) can form a roll by winding the remaining metal-plastic laminate, which has passed through a laminator and a forming device, at a constant tension and speed. In this case, the material wound into a roll may be the remaining part after cutting in the forming device (105). The continuous material remaining after the material of a specific shape has been stored through the cutting process in the forming device (105) can be systematically recovered through the rewinder (1003). By winding this remaining material with a constant winding tension to form a roll, the rewinder (1003) facilitates storage for future recycling or use for other purposes.

[0090] Each device can be controlled via an independent control system and operate in synchronization with the line speed of the entire roll-to-roll process. Furthermore, the stability of the continuous process can be ensured by detecting and correcting tension changes or speed deviations that may occur during film transport in real time. Through the precise control of these devices, a continuous metal-plastic laminate manufacturing process capable of mass production can be realized.

[0091] FIG. 4 is a drawing for explaining how a plastic member and a metal member are combined according to one embodiment of the present disclosure.

[0092] Referring to FIG. 4, functional groups may be formed on one surface of a surface-modified plastic member and one surface of a metal member. In this case, the functional group may be a hydroxyl group (OH). Additionally, the functional group may be an amino group (NH2). An adhesive may be applied to at least one surface of the plastic member and the metal member on which the functional groups are formed.

[0093] For example, the adhesive can be applied to a surface-modified surface of a plastic member. Additionally, the adhesive can be applied to a surface-modified surface of a metal member. Additionally, the adhesive can be applied to a surface-modified surface of both a plastic member and a metal member.

[0094] According to one embodiment of the present disclosure, a plastic member and a metal member may be laminated. In this case, a laminator (105) may form a molecular bonding layer between the plastic member and the metal member by applying pressure and temperature to the plastic member and the metal member.

[0095] FIG. 5 is a drawing for illustrating a method of manufacturing a metal-plastic laminate according to one embodiment of the present disclosure.

[0096] A method for manufacturing a metal-plastic laminate according to one embodiment of the present disclosure may include at least one of an unwinding step (S5001, S5002), a cleaning step (S5011, S5012), a surface modification step (S5021, S5022), an adhesive coating step (S5031, S5032), a drying step (S5041, 5042), a lamination step (S505), a forming step (S506), and a rewind step (S507).

[0097] According to one embodiment of the present disclosure, in the first unwinding step (S5001), a plastic member may be withdrawn from the wound roll. Additionally, in the second unwinding step (S5002), a metal member may be withdrawn from the wound roll. A detailed description thereof has been provided above in FIGS. 1 to 3.

[0098] According to one embodiment of the present disclosure, a plastic member may be cleaned in the first cleaning step (S5011). Additionally, a metal member may be cleaned in the second cleaning step (S5012). A detailed description thereof has been provided above in FIGS. 1 to 3.

[0099] According to one embodiment of the present disclosure, in the first surface modification step (S5021), the surface of a plastic member may be modified by a first surface modification device (1021) to form functional groups. Additionally, in the second surface modification step (S5022), the surface of a metal member may be modified by a second surface modification device (1022) to form functional groups. A detailed explanation thereof has been provided above in FIGS. 1 to 3.

[0100] According to one embodiment of the present disclosure, in the first adhesive coating step (S5031), one surface modified of a plastic member may be coated by the first coating device (1031). Additionally, in the second adhesive coating step (S5032), one surface modified of a metal member may be coated by the second coating device (1032).

[0101] In FIG. 5, it is depicted that both the surface of the plastic member and the surface of the metal member are coated according to one embodiment, but according to embodiments of the present invention, at least one of the surface of the plastic member and the surface of the metal member may be coated.

[0102] This has been described in detail in FIGS. 1 to 3.

[0103] According to one embodiment of the present disclosure, in the drying step (S5041, S5042), one surface of a plastic member and / or a metal member to which an adhesive has been applied may be dried. For example, a first drying device (1041) may dry the adhesive applied to a plastic member, and a second drying device (1042) may dry the adhesive applied to a metal member.

[0104] In this case, the method for manufacturing a metal-plastic laminate may optionally include a first drying step (S5041) and a second drying step (S5042) depending on the adhesive application method. For example, the method for manufacturing a metal-plastic laminate may include a first drying step (S5041) when a plastic member is coated, a second drying step (S5042) when a metal member is coated, and both the first drying step (S5041) and the second drying step (S5042) when both a plastic member and a metal member are coated. This has been described in detail in FIGS. 1 to 3.

[0105] In the lamination step (S505), the rapid member and the plastic member can be laminated. In addition, in the forming step (S506), the laminated member can be molded, and the molded member can be cut. This has also been described in detail in FIGS. 1 to 3.

[0106] In the rewind step (S507), the metal-plastic laminate can be wound into a roll. This has also been described in detail in FIGS. 1 to 3.

[0107] Although the above-described embodiments specifically explain a method for manufacturing a metal-plastic laminate, the present invention is not limited thereto. The technical concept of the present invention can be applied not only to a method for manufacturing a metal-plastic laminate but also to the manufacturing process, manufacturing system, and the entire component processing process using the same.

[0108] Furthermore, the present invention may also be implemented as a process consisting of individual manufacturing steps, and each process step may be carried out independently or in combination. Those skilled in the art will understand that various modifications and changes to the manufacturing method, manufacturing process, process conditions, process sequence, etc., are possible without departing from the essential characteristics of the present invention.

[0109] FIG. 6 is a drawing for explaining a bar coater-embedded slot die according to one embodiment of the present disclosure.

[0110] According to one embodiment of the present disclosure, a bar coater-embedded slot die coating device has a bar coater embedded in a slot die that supplies coating material, and can finely control and form the thickness and distribution of the coating material provided to the slot die.

[0111] To explain in more detail, the bar coater-embedded slot die (600) is supplied with a coating material to be coated inside the device (630), and a slot of a predetermined size is formed in the discharge port portion (620) through which the coating material is discharged, so that the coating liquid is discharged through the slot and the coating material is applied to the surface of the film. At this time, the bar coater-embedded slot die (600) is characterized by having a bar coater (610) embedded in the slot through which the coating material is discharged. The bar coater can be formed as a bar in the shape of a rod, so that the longitudinal portion of the bar coater is arranged parallel to the longitudinal direction of the slot and can be provided inside the device.

[0112] In this case, the interior of the bar coater-embedded slot die device (600) may include a coating material accumulation section (640) in which the introduced coating material is accumulated. The coating material accumulation section (640) is an area within the interior space of the slot die device (600) where the coating material is temporarily collected, and it serves to ensure uniform distribution and stable supply of the coating material.

[0113] A bar coater-embedded slot die device (600) according to one embodiment of the present disclosure has a bar coater embedded therein so that a coating material can be applied to a film, and the coating material can be applied uniformly and evenly in both the longitudinal and transverse directions on the coating target.

[0114] In this case, the coating material may include an adhesive.

[0115] FIGS. 7 to 9 are drawings for explaining a slot die coater with a gravure roller embedded therein and a microchannel applied thereto according to one embodiment of the present disclosure.

[0116] According to one embodiment of the present disclosure, a slot die coater (700) with a gravure roller embedded with a microchannel may include a housing (730) having a fluid passage formed inside, an adhesive storage unit (720) in which adhesive introduced from the outside is accumulated, a microchannel unit (740) having a plurality of microchannels to distribute adhesive introduced from the adhesive storage unit and discharge adhesive through a plurality of discharge ports, and a bar (750) for coating an adhesive introduced from the microchannel unit onto a coating target.

[0117] The slot die coater with the microchannels of the present invention is configured with a pumpless structure, enabling the supply and distribution of adhesive without a separate pump.

[0118] The housing (730) is a case structure forming the outer shape of the slot die coater of the present invention, and a fluid passage is formed inside through which adhesive can move. The housing (730) serves to connect and support the adhesive storage section (720) and the microchannel section (740), and maintains the quality of the adhesive by blocking the inflow of contaminants from the outside. An adhesive injection port (710) is formed on the upper part of the housing (730) to allow adhesive to be supplied from an external source.

[0119] In addition, the housing (730) may be provided with a blade portion (731). The blade portion (731) can precisely control the amount of adhesive coating by removing excess adhesive within the cells formed on the surface of the gravure roller (750). The blade portion (731) may be made of stainless steel or a special alloy and may be implemented as a thin plate-like structure. Additionally, it may operate by contacting the surface of the gravure roller (750) at a certain angle and pressure. As shown in the drawing, the shape of the blade portion (731) may have a triangular or wedge-shaped cross-section, and the end portion in contact with the gravure roller may form a sharp edge to perform an effective scraping action. The blade portion (731) may be installed with a certain angle of inclination relative to the housing (730).

[0120] The adhesive inlet (710) is located at the top of the housing (730) and is connected to an external adhesive supply system. The adhesive introduced through the adhesive inlet (710) moves along the fluid passage inside the housing (730) to the adhesive storage section (720). The adhesive inlet (710) is configured to have an appropriate size and shape to enable smooth supply of adhesive.

[0121] The adhesive storage section (720) serves as a storage area for temporarily accumulating adhesive introduced through the adhesive injection port (710). The adhesive storage section (720) is formed as a hollow structure in the shape of a rectangular parallelepiped to secure sufficient adhesive storage capacity. Additionally, the adhesive storage section (720) may be implemented in the shape of a curved cylinder, but is not limited thereto. The lower part of the adhesive storage section (720) is connected to the microchannel section (740) and configured so that the stored adhesive can flow into the microchannel section (740).

[0122] The microchannel section (740) performs the function of distributing adhesive introduced from the adhesive storage section (720) through a plurality of microchannels. The microchannel section (740) has a plurality of fine channels formed inside a plate-shaped structure, and these microchannels control the flow of the adhesive to enable uniform distribution.

[0123] The microchannel section (740) includes a main channel (7401) that communicates with the adhesive storage section (720) and a plurality of branch channels (7402) that branch off from the main channel and are connected to respective discharge ports. The main channel is directly connected to the outlet of the adhesive storage section (720) to primarily receive the adhesive, and the plurality of branch channels branch off from the main channel and extend toward the bar (750). The end of each branch channel forms a discharge port, and the plurality of discharge ports are arranged in a line along the width direction of the bar (750) so that the adhesive can be evenly supplied to the entire bar (750).

[0124] The size and shape of the microchannels can be optimized according to process conditions such as adhesive viscosity, coating speed, and coating thickness, and the diameter of each microchannel can be implemented in a range of 500 μm or less.

[0125] The bar (750) is a component in the form of a coating roller that actually applies the adhesive supplied from the microchannel section (740) to the object to be coated. The bar (750) is configured in a cylindrical or columnar shape, and its surface comes into direct contact with the object to be coated to coat the adhesive with a uniform thickness. The surface of the bar (750) may have a specific roughness or pattern to improve coating quality, and the material and surface treatment may be applied differently depending on the characteristics of the object to be coated. The bar (750) is configured to be rotatable so that a continuous coating process is possible.

[0126] The bar (750) can be implemented as a gravure roller. The gravure roller is described in detail in FIG. 10.

[0127] The valve (760) is a component that controls the flow of the adhesive and may be located between the adhesive storage section (720) and the microchannel section (740) or inside the microchannel section (740). The valve (760) performs the function of opening, closing, or controlling the flow of the adhesive to start and end the coating process and to control the amount of adhesive supplied.

[0128] The operation process of a slot die coater with a gravure roller integrated and a microchannel applied according to one embodiment of the present disclosure is as follows:

[0129] Adhesive supply: Adhesive is introduced into the housing (730) through the adhesive inlet (710) from an external supply system. The present invention is a pumpless structure, so that the adhesive is supplied using gravity or a pressure difference without a separate pump.

[0130] Adhesive accumulation: The introduced adhesive travels along the fluid passage inside the housing (730) and accumulates in the adhesive storage section (720).

[0131] Adhesive distribution: The adhesive stored in the adhesive storage unit (720) flows into the microchannel unit (740) under the control of the valve (760) and is evenly distributed through a plurality of microchannels.

[0132] Adhesive discharge: The adhesive that has passed through each microchannel of the microchannel section (740) is supplied to the bar (750) through a plurality of discharge ports.

[0133] Coating execution: The adhesive supplied to the bar (750) is uniformly applied to the surface of the object to be coated by the rotation or movement of the bar (750).

[0134] According to one embodiment of the present disclosure, a gravure roller-embedded slot die coater (700) with a microchannel applied has a pumpless structure, so the pump's pulsation is not transmitted to the bar coater, thereby improving the stability of the coating quality. In conventional coating systems using pumps, periodic pressure changes from the pump are transmitted to the coater, which can cause non-uniformity of the coating thickness and surface defects, but the pumpless structure of the present invention can fundamentally solve these problems.

[0135] In this specification, "slot die coater" may be used as a higher-level concept including "bar coater-embedded slot die coater," and "bar coater-embedded slot die coater" may be used as a concept encompassing "gravure roller-embedded slot die coater" and "gravure roller-embedded slot die coater with microchannels." Additionally, each term may refer to a coating device with a different configuration depending on the context.

[0136] Additionally, "bar" may be used as a higher-level concept including "gravure roller," and "gravure roller" may represent an embodied embodiment.

[0137] The above terms may be used in a hierarchical inclusion or mutual substitution relationship, and in some cases, one term may represent a specific embodiment or variation of another term. Specifically, "slot die coater" is a top-level concept encompassing all slot die-based coating devices, "bar coater integrated slot die coater" is a sub-concept, and "gravure roller integrated slot die coater" and "gravure roller integrated slot die coater with microchannels" represent more specific embodiments.

[0138] Therefore, even if specific terms are used in this specification, it is not intended to restrict the scope of the device expressed by such terms, and it should be understood to include all forms of slot-die-based coating devices capable of embodying the technical concept of the present invention.

[0139] FIG. 10 is a conceptual diagram for explaining a gravure roller according to one embodiment of the present disclosure.

[0140] According to one embodiment of the present disclosure, the gravure roller (750) has a cylindrical structure and can be manufactured in a form in which a plurality of cells (750a) are regularly arranged on its surface. The gravure roller (750) can be manufactured from a metal material such as stainless steel, chrome-plated steel, or ceramic-coated steel to ensure wear resistance and corrosion resistance. The cells (750a) formed on the surface of the roller can store a certain amount of adhesive and perform the function of uniformly transferring it to a substrate.

[0141] The shape of the cell (750a) can be formed in various shapes, such as a circle, an ellipse, or a polygon, as seen in the drawing.

[0142] According to one embodiment of the present disclosure, the cells (750a) may be arranged in various patterns on the roller surface. For example, they may be arranged in a hexagonal pattern, a straight pattern, or a staggered pattern, but are not limited thereto.

[0143] During the operation of the gravure roller (750), adhesive is filled inside the cell (750a), and then excess adhesive on the surface of the cell can be removed by the blade portion (731). After that, as the roller contacts the member to be coated, the adhesive inside the cell (750a) is transferred to the surface of the member to be coated, forming a uniform adhesive layer.

[0144] The gravure roller (750) can be manufactured using precision machining, laser engraving, electrolytic etching, and other technologies.

[0145] FIG. 11 is a drawing for explaining an air hybrid electrostatic spray coating apparatus according to one embodiment of the present disclosure.

[0146] According to one embodiment of the present disclosure, the air hybrid electrostatic spray coating device (1100) is a hybrid coating device that combines pneumatic spray technology using compressed air and electrostatic spray technology using a high-voltage electrostatic field. The air hybrid electrostatic spray coating device (1100) is composed of an adhesive discharge nozzle located in the center, an annular compressed air injection unit surrounding it, and a high-voltage application device formed at the tip of the nozzle, and through the precise coordinated operation of each of these components, nanometer-level coating thickness control is possible.

[0147] The electrostatic force generated by the high-voltage application device forcibly induces charged adhesive droplets to the grounded substrate surface according to the principle of Coulomb force, and in this process, the droplets are micronized through the electrostatic breakup phenomenon.

[0148] It can be easily utilized when forming ultra-thin adhesive layers required in the manufacture of FCCL or battery pouches.

[0149] FIGS. 12 to 14 are drawings for explaining an air hybrid electrostatic spray coating device equipped with an air curtain according to one embodiment of the present disclosure.

[0150] Referring to FIG. 12, an air hybrid electrostatic spray coating device (1200) equipped with an air curtain may include at least one of a voltage application module (1210), a coating agent supply unit (1220), a gas supply unit (1230), a gas flow rate control module (1240), a spray head module (1250), a camera unit (1270), and a support member (1280).

[0151] The voltage application module (1210) can apply voltage to the electrode portion (1250a) within the spray head module (1250) to impart an electrostatic charge to the adhesive or coating liquid. For example, the voltage application module (1210) may include a high-voltage transformer that generates a DC high voltage in the range of 20 to 120 kV, a voltage stabilization circuit, a current limiting circuit, and a voltage monitoring system. Voltage control can be regulated through a Pulse Width Modulation (PWM) method or a variable resistor method.

[0152] The voltage application module (1210) can maximize the efficiency of electrostatic spray coating through various voltage application methods. For example, the voltage application module (1210) can apply a high voltage to the electrode portion (1250a) within the spray head module (1250). In this case, a positive voltage or a negative voltage is applied to the electrode portion (1250a), and the adhesive droplets discharged from the nozzle are charged with the same polarity. The charged adhesive droplets are dispersed by mutual electrostatic repulsion, maintain a fine size, and move toward a grounded coating target.

[0153] As another example, the voltage application module (1210) can simultaneously apply voltage to the electrode portion (1250a) and the support member (1280). At this time, voltages of opposite polarity are applied to the electrode portion (1250a) and the support member (1280) to form a strong electric field. For example, if +50kV is applied to the electrode portion (1250a), -10kV is applied to the support member (1280) or maintained in a grounded state to maximize the potential difference. Due to this voltage application method, the adhesive discharged from the electrode portion (1250a) acquires a strong electrostatic charge, and the charged adhesive droplets move to the coating target located on the support member (1280) due to the Coulomb force caused by the electrical polarity. In this case, the electrostatic spray coating device (1200) can control the penetration depth and spreading properties of the adhesive by adjusting the potential difference between the electrode part (1250a) and the support member (1280).

[0154] Through this, the electrostatic spray device (1200) can satisfy the precise coating specifications required when manufacturing FCCL or battery pouches.

[0155] The coating agent supply unit (1220) can supply a coating liquid (e.g., adhesive) to the spray head module (1250). According to one embodiment, the coating agent supply unit (1220) may include at least one of an adhesive storage tank, a metering pump, a flow control valve, a pressure regulator, and a filter system, and can supply the adhesive to the spray head module (1250) at a constant pressure and flow rate.

[0156] The gas supply unit (1230) and the gas flow control module (1240) can supply gas to the spray head module (1250). The supplied gas can assist in the transfer of the coating liquid. In this case, the gas may include compressed air or an inert gas (e.g., nitrogen, argon).

[0157] The gas supply unit (1230) and the gas flow control module (1240) can supply gas to the spray head module (1250) to control the spraying performance of the adhesive. The supplied gas assists in the transport of the coating liquid and promotes atomization.

[0158] In this case, the gas may include compressed air or an inert gas (e.g., nitrogen, argon).

[0159] According to one embodiment, the gas supply unit (1230) is responsible for stable gas supply, including a gas storage tank and a pressure regulator, and may optionally include a filter system.

[0160] The gas flow control module (1240) includes a flow control valve and / or sensor to precisely control the flow rate and pressure of the gas. The supplied gas is sprayed around the adhesive nozzle to assist in the atomization of the adhesive and to form a spray pattern. Additionally, through an air curtain function, it stabilizes the airflow around the spray area to minimize the influence of the external environment and improve coating quality. The type and flow rate of the gas are controlled according to the characteristics of the adhesive and the required coating conditions, thereby enabling optimal spray performance in various applications.

[0161] The camera unit (1270) can capture the spraying process and / or coating result of the electrostatic spray device (1200). The camera unit (1270) can capture at least one of the droplet shape, spray pattern, and flight trajectory of the coating liquid sprayed by the electrostatic spray device (1200). Additionally, the camera unit (1270) can capture the coating result sprayed on the coating target and save the final coating state.

[0162] The electrostatic spray device (1200) can analyze images captured by the camera unit (1270) and, based on this, can quantitatively determine the coating area and coating quality.

[0163] In this case, coating quality may include coating thickness and / or coating uniformity.

[0164] According to one embodiment of the present disclosure, the camera unit (1270) includes a high-resolution CCD or CMOS sensor and is capable of high-speed shooting, so that the dynamic behavior of a rapidly moving droplet can be accurately captured. In addition, optimal image quality is secured by linking with a lighting system (not shown), and the measured data can be stored in real time.

[0165] The support member (1280) can stably support the metal or plastic member to be coated. In a roll-to-roll process, the coating targets, such as metal or plastic members, can continuously pass over the support member (1280). The support member (1280) can be designed as a flat, roller, or curved structure and can provide an appropriate support area depending on the shape and size of the coating target.

[0166] According to one embodiment of the present disclosure, the support member (1280) may be voltage-applied by a voltage application module (1210) so as to pull a charged coating liquid droplet discharged from a spray head module (1250) by electrostatic force. At this time, a voltage of opposite polarity to that of the electrode portion (1250a) of the spray head may be applied to the support member (1280), or a strong electric field may be formed by maintaining a grounded state.

[0167] At least a portion of the support member (1280) may be made of an electrically conductive material to maintain a uniform potential distribution. In a roll-to-roll process, the support member (1280) may work in conjunction with a guide roller to maintain constant tension and transport speed of the substrate while ensuring smooth electrostatic spray coating. Additionally, the temperature of the support member (1280) may be varied to optimize the temperature of the coating target during the coating process and improve the wettability and curing characteristics of the adhesive.

[0168] Referring to FIG. 13, the spray head module (1250) may include at least one of an electrode part (1250a), a driving part (1250b), a rotating shaft (1250c), a housing (1250d), an air curtain part (1250e), an air passage (1250f), and a coating agent passage (1250g).

[0169] The electrode portion (1250a) can charge the coating particles by applying electricity to the coating agent. The electrode portion (1250a) is inserted and positioned inside the coating agent flow path (1250g) and can receive voltage by being electrically connected to the voltage application module (1210). The electrode portion (1250a) can be manufactured from a conductive material such as stainless steel, tungsten, or platinum, and can impart an electric charge to the droplet through direct contact with the coating agent. The electrode portion (1250a) can be formed in a needle shape, but is not limited thereto.

[0170] The driving unit (1250b) is a device that provides rotational force to the rotating shaft (1250b). The driving unit (1250b) can be implemented as a stepping motor, a servo motor, a DC motor, etc., but is not limited thereto. The driving unit (1250b) can be controlled by a control unit and can move the air curtain unit (1250e) in a vertical direction by providing driving force to the rotating shaft (1250c).

[0171] The rotating shaft (1250c) is rotated by the driving unit (1250b), and the air curtain unit (1250e) can move in a vertical direction due to the rotation of the rotating shaft (1250c). For example, when the rotating shaft (1250c) rotates in one direction, the air curtain unit (1250e) can move downward, and when it rotates in the other direction, the air curtain unit (1250e) can move upward.

[0172] The housing (1250d) serves as an outer case for the spray head module (1250) and can protect and secure internal components. Inside the housing (1250d), a coating agent channel (1250g) formed in the center through which the coating agent flows, and an air channel (1250g) formed to surround the coating agent channel (1250g) through which air flows can be formed. The housing (1250d) may be made of aluminum alloy or stainless steel, but is not limited thereto and may be made of various hard materials.

[0173] The air curtain section (1250e) is arranged annularly around the housing (1250d) to form a laminar air film around the spray area, thereby assisting in the diffusion of the sprayed coating agent. The air curtain section (1250e) is allowed to be positioned vertically. For example, the driving unit (1250b) provides driving force, and the rotating shaft (1250c) rotates by the provided driving force. The threads of the rotating shaft (1250c) and the threads on the outside of the air curtain section (1250e) are engaged, so that when the rotating shaft (1250c) rotates in one direction, the air curtain section (1250e) can move downward. Additionally, when the rotating shaft (1250c) rotates in the other direction, the air curtain section (1250e) can move upward.

[0174] The air passage (1250f) is a gas supply passage formed inside the housing (1250d), through which compressed air or inert gas supplied from the gas supply unit (1230) flows and moves toward the member to be coated. As a result, the gas released through the air passage (1250f) can assist in the diffusion of the coating agent.

[0175] The coating agent channel (1250g) is a passage formed inside the housing (1250d) and transports a coating agent (e.g., adhesive) supplied from the coating agent supply unit (1230). The coating agent transported through the coating agent channel (1250g) can be charged by the electrode unit (1250g) and sprayed toward the member to be coated.

[0176] According to one embodiment of the present disclosure, an orifice (not shown) may be formed at the end portion of the coating agent flow path (1250g).

[0177] According to one embodiment of the present disclosure, the spray head module (1250) can move in a vertical direction. For example, the spray head module (1250) can move in a vertical direction under the control of a control unit.

[0178] Figure 14 is a diagram illustrating the movement of the air curtain section.

[0179] Referring to FIGS. 13 and FIGS. 14, the air curtain section (1250e) can move in a vertical direction. In FIG. 13, the air curtain section (1250e) is moved relatively upward, and in FIG. 14, the air curtain section (1250e) is moved relatively downward.

[0180] This vertical movement function is provided to optimize the position of the air curtain section (1250e) according to various coating conditions and substrate characteristics. The vertical movement of the air curtain section (1250e) is implemented through threaded coupling with the rotating shaft (1250c), and the vertical movement is controlled according to the rotational direction of the driving section (1250b). When the air curtain section (1250e) moves downward, an air curtain is formed at a position closer to the substrate to be coated, thereby enhancing the diffusion control effect of the sprayed coating agent. Conversely, when the air curtain section (1250e) moves upward, the spraying area is expanded, making it possible to coat a large area.

[0181] The movement of the air curtain unit (1250e) can be controlled by the control unit of the air hybrid electrostatic spray coating device. Additionally, it can be integrally controlled by the upper control unit of the device for manufacturing the metal-plastic laminate. The position of the air curtain unit (1250e) can be determined according to predetermined coating conditions. Furthermore, the position of the air curtain unit (1250e) can be changed in real time according to changes in coating conditions.

[0182] The control unit can determine the target position of the air curtain unit (1250e) and control the rotation of the rotating shaft (1250c) through the drive unit (1250b). In addition, the current position of the air curtain unit (1250e) can be monitored in real time through a position sensor (not shown), and feedback control can be performed to minimize deviation from the target position. Through this automatic control system, the air curtain unit (1250e) can be automatically positioned to match the optimal conditions for each product during production, such as FCCL and battery pouches, thereby ensuring consistent coating quality.

[0183] FIG. 15 is a drawing for explaining a surface elastic wave coating device according to one embodiment of the present disclosure.

[0184] According to one embodiment of the present disclosure, a surface elastic wave coating device (1500) may include at least one of a coating agent supply unit (1510), a gas supply unit (1530), a gas flow rate control module (1540), a camera unit (1595), a support member (1597), and an elastic wave coating module (1500A).

[0185] Additionally, the elastic wave coating module (1500A) may include at least one of a housing (1520), a gas inlet (1550), a first electrode (1560), a second electrode (1570), an actuator (1580), and a voltage application module (1590).

[0186] The coating agent supply unit (1510) can supply a coating agent (e.g., adhesive) into the housing (1520). The coating agent supply unit (1510) may include an adhesive storage tank, a metering pump, and a flow control valve, and can supply the coating agent at a constant pressure and flow rate. The supplied coating agent flows into the housing (1520) and can be transported along the inner surface of the housing to an actuator (1580). In this case, a guide (not shown) may be formed inside the housing (1520) to allow the coating agent to be transported.

[0187] The gas supply unit (1530) can store and supply gas (e.g., compressed air or gas). The gas supplied from the gas supply unit (1530) can assist in the transport of the atomized coating agent. For example, the gas supplied from the gas supply unit (1530) can act as a carrier to effectively transport the atomized coating agent droplets, which are atomized by surface elastic waves, toward the coating target. In addition, the supplied gas also serves to regulate the temperature and humidity inside the housing (1520), thereby preventing changes in the physical properties of the adhesive and maintaining constant coating conditions.

[0188] The housing (1520) is an outer case forming the main chamber of the surface acoustic wave coating device (1500) and may have a rectangular cylindrical structure. A gas inlet (1550) and a coating agent inlet are formed in the housing (1520), so that gas and coating agent can be introduced independently. Additionally, an actuator (1580) is provided inside the housing (1520) to atomize the introduced coating agent. A first electrode (1560) is provided on the upper side of the interior of the housing (1520), and a second electrode (1570) is provided on the lower side of the interior, so that an electric field can be formed inside the housing (1520). Due to the formed electric field, the atomized coating agent receives an electrostatic force and is drawn out of the housing (1520) to be coated on the coating target. The housing (1520) may be made of aluminum or stainless steel, but is not limited thereto.

[0189] The gas flow control module (1540) is located between the gas supply unit (1530) and the housing (1520) to precisely control the flow rate and pressure of the gas. The gas flow control module (1540) can be controlled by a control unit. For example, the control unit can control the gas flow rate to a preset flow rate according to predetermined coating conditions, and can control the gas flow rate in real time.

[0190] The first electrode (1560) is an electrode provided on the upper inner side of the housing (1520) and is responsible for one pole of electric field formation. The first electrode (1560) may be designed in a flat, mesh, or ring-shaped structure, but is not limited thereto. The first electrode (1560) may be made of a conductive material such as stainless steel, copper, or platinum, but is not limited thereto.

[0191] The electrode surface may be treated with gold plating or platinum coating for corrosion prevention and electrical stability. A positive or negative voltage from a voltage application module (1590) may be applied to the first electrode (1560) to form an electric field inside the housing (1520).

[0192] The second electrode (1570) is provided on the lower inner side of the housing (1520) and can perform the role of completing the electric field opposite to the first electrode (1560).

[0193] The second electrode (1570) may be made of a conductive material such as stainless steel, copper, or platinum, but is not limited thereto.

[0194] The second electrode (1570) may be subjected to a voltage of opposite polarity to the first electrode (1560) or maintained in a grounded state.

[0195] The second electrode (1570) may include a plurality of electrodes, and the plurality of electrodes may be grouped into at least one group and each may be controlled independently. For example, the second electrode (1570) may be grouped into one group or into two groups, but is not limited thereto.

[0196] When the second electrode (1570) is grouped into multiple groups, each of the multiple groups can be controlled independently. For example, a first voltage can be applied to the first group, and a second voltage can be applied to the second group. As a result, the area coated by the coating agent can be adjusted according to the control of the control unit.

[0197] For example, the control unit can implement various coating patterns by independently controlling the magnitude, polarity, and timing of the voltage applied to each group. When a voltage with a large potential difference from the first electrode (1560) is applied to the first group, a strong electric field is formed in that region, causing coating agent droplets to be intensively induced, and when a voltage with a small potential difference from the first electrode (1560) is applied, a relatively weak coating is formed.

[0198] Additionally, selective coating areas can be controlled by applying voltage only to specific groups and keeping other groups grounded. Specifically, when +10kV is applied to the first electrode (1560) and -5kV is applied to a specific group of the second electrode (1570), a strong electric field (approx. 30kV / m) is formed due to a potential difference of 15kV, and a high-density coating is performed in that area. On the other hand, if only -1kV is applied to another group, a relatively weak electric field is formed due to a potential difference of 11kV, and a thin coating layer is formed. Through timing control, dynamic coating patterns can be implemented by sequentially changing the voltage of each group over time, thereby enabling gradient coating or coating with gradual thickness changes. By utilizing polarity control, the direction of movement of the coating agent droplets can be precisely controlled by applying a positive voltage to a specific group and a negative voltage to another group. Through such multidimensional control, complex coating requirements can be satisfied, such as selective adhesive application tailored to the circuit pattern of FCCL or differential coating for different sealing areas of battery pouches.

[0199] An actuator (1580) is provided inside the housing (1520) and can atomize an introduced coating agent (e.g., adhesive). For example, the actuator (1580) can vibrate at a predetermined frequency to atomize the liquid coating agent and change its state to a gaseous state. The atomized coating agent becomes electrostatically charged by the electric field inside the housing (1520) and is transported to a coating target together with a carrier gas supplied from the gas supply unit (1530) to form a uniform coating layer.

[0200] The actuator (1580) can be controlled by a control unit. The actuator (1580) can vibrate according to predetermined coating conditions, and the vibration frequency can be varied in real time.

[0201] The voltage application module (1590) can supply voltage to the first electrode (1560) and the second electrode (1570). Additionally, the voltage application module (1590) can be controlled by a control unit. The voltage application module (1590) can form an electric field inside the housing (1520) by applying different voltages to the first electrode (1560) and the second electrode (1570).

[0202] The camera unit (1595) can capture the spraying process and / or coating result of the surface acoustic wave coating device (1500). The camera unit (1595) can capture at least one of the droplet shape, spray pattern, and flight trajectory of the coating liquid sprayed by the surface acoustic wave coating device (1500). Additionally, the camera unit (1595) can capture the coating result sprayed on the coating target and save the final coating state.

[0203] The surface elastic wave coating device (1500) can analyze images captured by the camera unit (1595) and, based on this, can quantitatively derive the coating area and coating quality.

[0204] In this case, coating quality may include coating thickness and / or coating uniformity.

[0205] According to one embodiment of the present disclosure, the camera unit (1595) includes a high-resolution CCD or CMOS sensor and is capable of high-speed shooting, so that the dynamic behavior of a rapidly moving droplet can be accurately captured. In addition, optimal image quality is secured by linking with a lighting system (not shown), and the measured data can be stored in real time.

[0206] The support member (1597) can stably support the metal or plastic member to be coated. In a roll-to-roll process, the coating targets, such as metal or plastic members, can continuously pass over the support member (1597). The support member (1597) can be designed as a flat plate, roller, or curved structure and can provide an appropriate support area depending on the shape and size of the coating target.

[0207] According to one embodiment of the present disclosure, the elastic wave coating module (1500A) can move in a vertical direction. For example, the elastic wave coating module (1500A) can move in an upward direction and in a downward direction depending on the control of the control unit.

[0208] Figures 16 and 17 are diagrams illustrating how a voltage application module supplies voltage to electrodes.

[0209] Referring to FIG. 16, the voltage application module (1590) can form a uniform and stable electric field inside the housing (1520) by applying different voltages to the first electrode (1560) and the second electrode (1570). For example, a positive high voltage (e.g., 25 kV) can be applied to the first electrode (1560), and a negative voltage (e.g., -5 kV) or ground potential can be applied to the second electrode (1570) to form an electric field between the two electrodes. The generated electric field imparts an electrostatic charge to the atomized coating agent droplets, thereby allowing the coating agent to move toward the coating target.

[0210] Referring to FIG. 17, the second electrode (1570) may be divided into a plurality of groups, and each group may be controlled individually. For example, the voltage application module (1590) may include a first voltage application module (1590A) and a second voltage application module (1590B), and each voltage application module may apply an independent voltage to the corresponding electrode group.

[0211] For example, the first voltage application module (1590A) can apply a first voltage (e.g., -10kV) to a first group of the second electrode (1570), and the second voltage application module (1590B) can apply a second voltage (e.g., -5kV) to a second group.

[0212] Through such multi-channel control, a high-density coating can be performed in the first group by forming a strong electric field, and a medium-density coating can be performed in the second group with an electric field of medium strength.

[0213] In addition, specific coating patterns can be implemented through dynamic control over time, which enables differential adhesive application based on FCCL circuit patterns or selective coating of battery pouches by zone.

[0214] Referring to FIG. 17, for convenience of explaining the invention, the first voltage application module (1590A) and the second voltage application module (1590B) are depicted as being provided separately, but according to the embodiment, the first voltage application module (1590A) and the second voltage application module (1590B) may be provided as a single module.

[0215] FIG. 18 is a drawing for explaining a gravure offset printing coater according to one embodiment of the present disclosure.

[0216] The gravure offset printing coater (1800) may include a gravure offset printing roller (1810). The gravure offset printing roller (1810) is located on one side of the blanket roller (1820) and rotates in the other direction opposite to the rotation direction of the blanket roller (1820), and can transfer a printing material to the blanket roller (1820). In this case, the printing material may include an adhesive.

[0217] A first printing pattern (P1) can be formed in a groove shape on the surface of the gravure offset printing roller (1810), and a printing material is received in the first printing pattern (P1). The printing material received in this way can be transferred to the surface of the blanket roller (1820) according to the first printing pattern (P1) by the surface of the gravure offset printing roller (1810) coming into contact with the surface of the blanket roller (1820).

[0218] At this time, the gravure offset printing coater (1800) may further include a printing material injection means (1830) located on one side of the gravure offset printing roller (1810) and injecting a printing material so that the printing material is received in the first printing pattern (P1).

[0219] Alternatively, the gravure offset printing coater (1800) may have the gravure offset printing roller (1810) in contact with a tray containing printing material on the other side to fill the first printing pattern (P1) with printing material, and may further include a doctor blade to remove excess printing material contained on the surface of the gravure offset printing roller (1810).

[0220] The gravure offset printing roller (1810) can be spaced upward by a predetermined value h relative to the rotation axis of the blanket roller (1820).

[0221] This is achieved by positioning the groove of the gravure offset printing roller (1810), in which the printing material is received, above the surface of the blanket roller (1820) at the contact surface between the blanket roller (1820) and the gravure offset printing roller (1810), thereby allowing the transfer of the printing material to the blanket roller (1820) to be more accurately carried out by the force of gravity.

[0222] At this time, a heater may be built into the blanket roller (1820) or the gravure offset printing roller (1810), and by including the heater, the evaporation rate and residual amount of the solvent contained in the printing material can be controlled.

[0223] More specifically, the solvent may be included in the printing material and is a material that facilitates the transfer operation when the printing material is transferred from the gravure offset printing roller (1810) to the blanket roller (1820) or when the printing material is transferred from the blanket roller (1820) to the printing surface (S). By controlling the evaporation rate of this solvent by a heater, accuracy can be increased and high-quality results can be produced.

[0224] FIG. 19 is a drawing for explaining a double blanket of a gravure offset printing coater according to one embodiment of the present disclosure.

[0225] According to one embodiment of the present disclosure, the blanket roller (1820) may be composed of a double layer. For example, the blanket roller (1820) may include a cylindrical space inside and may include an outer skin (1812) made of a material of a predetermined hardness. The outer skin (1812) may be composed of PDMS (Polydimethylsiloxane), and the hardness may be PDMS 60 to 70 (Shore A).

[0226] Additionally, according to one embodiment of the present invention, the blanket roller (1820) may include an inner skin (1814) that is filled in the inner space of the outer skin (1812) and is made of a material with a lower hardness than the outer skin (1812). The inner skin (1814) may also be made of PDMS, and the hardness may be PDMS 10 to 20 (Shore A).

[0227] Additionally, the inner skin (1814) may be composed of a sponge. The sponge has a porous structure and can provide elastic recovery force when compressed.

[0228] Additionally, a blanket roller (100) according to one embodiment of the present invention may include a core portion (1816) located at the center of an inner skin portion (1814). A rotation axis may be formed through the center of the core portion (1816) and may rotate in the same phase as the rotation axis.

[0229] The core portion (1816) is a cylindrical rod made of metal, and the hardness of the core portion (1816) may be higher than that of the outer skin portion (1812) and the inner skin portion (1814).

[0230] By including a core portion (1816), the position and shape of the outer skin portion (1812) and the inner skin portion (1814) can be fixed. The core portion (1816) may be bonded to the inner skin portion (1814) by applying an adhesive or the like to its surface. Alternatively, irregularities may be uniformly formed at predetermined intervals on the surface of the core portion (1816), and the bonding strength between the inner skin portion (1814) and the core portion (1812) may be increased by laminating the inner skin portion (1814) onto the surface of the core portion (1816).

[0231] At this time, the thickness t1 of the outer skin (1812) may be thinner than the thickness t2 of the inner skin (1814). More specifically, the inner skin (1814) may form the volume of the blanket roller (1820) like the core part (1816), and the outer skin (1812) may be a thin sheet (0.5 mm or less) attached to the surface of the inner skin (1814). More specifically, the thickness of the inner skin (1814) and the radius of the core part (1816) may be nearly the same, and the thickness of the inner skin (1814) and the thickness of the outer skin (1812) may differ by more than 40 times.

[0232] By adopting such a structure, the blanket roller (100) of the present invention can uniformly apply adhesive to plastic members and / or metal members.

[0233] FIG. 20 is a drawing for explaining a computing module according to one embodiment of the present disclosure.

[0234] According to one embodiment of the present disclosure, the devices described herein may each include a computing module (2200). For example, a cleaning device (1011, 1012), a surface modification device (1021, 1022), an adhesive coating device (1031, 1032), a drying device (1041, 1042), a laminator (105), a forming device (106), etc. may include a computing module (2200), and a device (100) for manufacturing a metal-plastic laminate may also include a computing module (2200). The computing module (2200) can control each of the devices. In this specification, "computing module (2200)" and "control unit" may be used as interchangeable terms to refer to each other.

[0235] A computing module (2200) according to one embodiment of the present invention may include one or more processors (2210), a memory (2220) for loading a computer program (2222) executed by the processor (2210), a bus (2260), a communication interface (2230), and a storage (2240) for storing the computer program (2222).

[0236] Here, only exemplary components of the computing module (2200) of the present invention are illustrated in FIG. 20. Therefore, a person skilled in the art to which the present invention pertains will understand that other general components may be included in addition to the components illustrated in FIG. 20.

[0237] The processor (2210) controls the overall operation of the computing module (2200) and each configuration of the devices described in the present invention. The processor (2210) may be composed of one or more cores and may include at least one of a central processing unit (CPU), a general purpose graphics processing unit (GPGPU), a tensor processing unit (TPU), a digital signal processor (DSP), a microcontroller unit (MCU), or a combination thereof. Additionally, the processor (2210) may include hardware accelerators such as application-specific integrated circuits (ASICs) or field programmable gate arrays (FPGAs). Alternatively, it may be configured to include any type of processor well known in the art of the present invention.

[0238] Additionally, the processor (2210) may perform operations for at least one application or program for executing the method according to embodiments of the present invention, and the computing module (100) may have one or more processors.

[0239] In various embodiments, the processor (2210) may further include RAM (Random Access Memory, not shown) and ROM (Read-Only Memory, not shown) for temporarily and / or permanently storing signals (or data) processed within the processor (2210). Additionally, the processor (2210) may be implemented in the form of a system-on-chip (SoC) comprising at least one of a graphics processing unit, RAM, and ROM.

[0240] In this specification, the control unit may be implemented as a processor (2210). The control unit may control each device to perform the methods and processes described in the present invention. For example, the control unit may coordinate the entire process of the metal-plastic laminate manufacturing device and control each device such as an unwinder (1001, 1002), a rewinder (1003), a cleaning device, a surface modification device, an adhesive coating device, a drying device, a laminator, and a forming device.

[0241] According to one embodiment of the present disclosure, a control unit may be provided in a metal-plastic laminate manufacturing device (100) to control the entire process, and may be provided in each device to control each device, but is not limited thereto.

[0242] The memory (2220) stores various data, instructions, and / or information. The memory (2220) may load a computer program (2222) from storage (2240) to execute a method / operation according to various embodiments of the present invention. When the computer program (2222) is loaded into the memory (22220), the processor (2210) may perform the method / operation by executing one or more instructions constituting the computer program (2222). The memory (2220) may be implemented as a volatile memory such as RAM, but the technical scope of the present invention is not limited thereto.

[0243] The bus (2260) provides communication functions between components of the computing module (2200). The bus (2260) can be implemented as various types of buses, such as an address bus, a data bus, and a control bus.

[0244] The communication interface (2230) supports wired and wireless internet communication of the computing module (2200). Additionally, the communication interface (2230) may support various communication methods other than internet communication. To this end, the communication interface (2230) may be configured to include a communication module well known in the art of the present invention. In some embodiments, the communication interface (2230) may be omitted.

[0245] Storage (2240) can store a computer program (222) non-temporarily. When performing a process according to an embodiment of the present invention through a computing module (2200), storage (2240) can store various information necessary to perform a method according to the disclosed embodiment or to provide a process.

[0246] The storage (2240) may be configured to include non-volatile memory such as ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), flash memory, a hard disk, a removable disk, or any form of computer-readable recording medium well known in the art to which the present invention belongs.

[0247] A computer program (2222) may include one or more instructions that cause a processor (2210) to perform a method / process according to various embodiments of the present invention when loaded into memory (2220). That is, the processor (2210) may perform the method / operation according to various embodiments of the present invention by executing the one or more instructions.

[0248] FIG. 21 is a drawing illustrating a method for determining process conditions of an electrostatic spray coating device using an artificial intelligence model according to one embodiment of the present disclosure.

[0249] According to one embodiment of the present disclosure, an apparatus (100) for manufacturing a metal-plastic laminate can determine process conditions of an electrostatic spray coating apparatus (1100) using an artificial intelligence model. In this case, a control unit provided in the apparatus (100) for manufacturing a metal-plastic laminate and / or a control unit provided in the electrostatic spray coating apparatus (1100) can determine process conditions of the electrostatic spray coating apparatus (1100) using an artificial intelligence model.

[0250] The control unit may have an artificial intelligence model that has learned the correlation between the coating area and coating quality of the electrostatic spray coating device (1100) and process variables.

[0251] In this case, coating quality may include coating thickness and coating uniformity.

[0252] Additionally, process variables may include at least one of the voltage applied to the electrode portion (1250a), the vertical position of the spray head module (1250), and the vertical position of the air curtain portion (1250e).

[0253] The control unit can obtain coating area and coating quality information. In addition, the coating area and quality information can be matched with process variable information. The process variable information can be estimated by calculating the coating area and quality information using the first model (2100).

[0254] According to one embodiment of the present disclosure, the first model (2100) is a model trained to infer process variables from coating area and coating quality, and can be trained with training data including coating area and coating quality in which process variables are labeled.

[0255] For example, the control unit can obtain result data of a coating performed according to predetermined process variables. Specifically, the control unit can obtain image data captured by the camera unit (1270). The control unit can label the obtained coating area and coating quality information together with the process variables during the coating performance and store them in the storage unit.

[0256] For a specific example, the control unit can convert high-resolution image data captured by the camera unit (1270) into a digital signal and acquire it. This image data includes droplet shape, spray pattern, surface condition after coating, etc. during the spraying process, and can be collected as continuous images at 30 to 1000 frames per second.

[0257] The control unit can quantitatively calculate coating area and coating quality information by analyzing acquired image data through computer vision algorithms and image processing techniques. The coating area can be calculated in mm² units through pixel-based area analysis, and coating quality can be analyzed using techniques such as grayscale analysis, texture analysis, and edge detection. Additionally, the control unit can label the acquired coating area and coating quality information along with process variables during the coating process and store them in the storage unit.

[0258] In addition, the control unit can use the stored data as training data.

[0259] The first model (2100) may be a model trained to output process variable information based on coating area and coating quality information.

[0260] The first model (2100) can be supervised using labeled training data. The first model (2100) may be composed of an input layer, an output layer, a hidden layer, an activation function, etc. For example, in one embodiment of the present invention, the hidden layer of the first model (2100) may include two layers and 32 nodes in each layer. The description of the hyperparameters described above is merely an example and the present invention is not limited thereto.

[0261] According to one embodiment of the present disclosure, the control unit may input information regarding the target coating area and the target coating quality to the learned first model (2100). In this case, a plurality of process variables may be derived as the result of the artificial intelligence model. For example, as the result of the artificial intelligence model, a plurality of combinations of the voltage applied to the electrode part (1250a), the vertical position of the spray head module (1250), and the vertical position of the air curtain part (1250e) may be derived (e.g., first process variable, second process variable, third process variable, etc.).

[0262] In this case, the control unit can determine process variables based on a predetermined policy. For example, the predetermined policy may be the lowest voltage. In this case, the control unit can determine the process variable (e.g., the second process variable) that has the lowest voltage applied to the electrode unit (1250a) among the combinations of process variables as the final process variable.

[0263] The predetermined policy can be set according to various optimization criteria. For example, in addition to the lowest voltage policy, criteria such as minimum energy consumption, shortest process time, highest production efficiency, or minimum equipment wear may be applied. For example, when the minimum energy consumption policy is applied, the control unit can select a combination of process variables that minimizes total energy consumption by comprehensively considering the voltage of the electrode unit (1250a), the driving energy of the spray head module (1250), and the position control energy of the air curtain unit (1250e).

[0264] FIG. 22 is a diagram illustrating training data for training an artificial intelligence model for an electrostatic spray coating device according to one embodiment of the present disclosure.

[0265] The training data (2200) may include a first training data subset (2210) composed of coating area and coating quality information obtained by analyzing images captured by the camera unit (1270) and labeled with process variables, and a second training data subset (2220) composed of coating area and coating quality information entered by a user and labeled with process variables.

[0266] The first learning data subset (2210) is obtained through automatic analysis by the camera unit (1270), so it has the advantage of high consistency and reproducibility and the ability to rapidly collect a large amount of data. However, due to the limitations of image analysis, it may not be possible to fully detect minute coating defects or complex surface characteristics. On the other hand, the second learning data subset (2220) consists of information obtained by skilled workers or quality inspectors through direct visual inspection, contact thickness measurement, adhesion tests, etc., and may include detailed quality characteristics that may be missed in camera analysis.

[0267] The first training data subset (2210) and the second training data subset (2220) may each consist of training data (2211, 2221), verification data (2213, 2223), and test data (2215, 2225). The training data may be used to train the first model (2100), and the first model (2100) may infer process variables based on the coating area and coating quality of the training data, and learn by backpropagating the error between the inferred process variables and the process variables labeled for the coating area and coating quality to the first model (2100). In the training of the first model (2100), the learning rate is set high at the beginning of the training epoch so that the first model (2100) does not overfit and the time consumed of computing resources required for training can be reduced. During the training epoch, if a certain standard of performance is satisfied through performance testing using test data at regular intervals, the learning rate can be adjusted to a lower level. This is to increase the final prediction accuracy by finely adjusting the weights of the first model (2100) through a small learning rate in the later stages of training. For general prediction performance, the first model (2100) can be trained with the training data (2211) of the first training data subset (2210), validated with the validation data (2223) of the second training data subset, and tested with the test data (2215) of the first training data subset and the test data (2225) of the second training data subset. Additionally, the first model (2100) can be trained with training data (2121) of the second training data subset, verified with verification data (2213) of the first training data subset (2210), and tested with test data (2215) of the first training data subset (2210) and test data (2225) of the second training data subset (2220).

[0268] According to one embodiment of the present disclosure, the first model (2100) may be implemented as an ensemble-based model. In this case, multiple different machine learning algorithms (e.g., random forest, support vector machine, neural network, gradient boosting) may each generate independent optimal solutions for the same input. Since each algorithm has different learning methods and characteristics, it may present various combinations of process variables for the same goal.

[0269] Additionally, the first model (2100) can be implemented as a probabilistic generative model. It learns the probability distribution of process variables for a given target condition by utilizing a Bayesian neural network or a Gaussian process. This model can generate multiple combinations of process variables with high probability by sampling, taking uncertainty into account.

[0270] Additionally, the first model (2100) can be implemented as a constraint-based optimization model. All possible solution spaces satisfying a given target quality can be explored by utilizing linear programming, integer programming, or genetic algorithms.

[0271] Additionally, the first model (2100) can be implemented as a hybrid model. By combining a deep learning model and a traditional optimization algorithm, a process variable region with a high probability of achieving target quality can be predicted first through a neural network, and then various optimal solutions within that region can be explored through an optimization algorithm. Furthermore, the first model (2100) is not limited to this and can be implemented in various ways.

[0272] FIG. 23 is a drawing for explaining a method of determining process conditions of a surface acoustic wave coating device using an artificial intelligence model according to one embodiment of the present disclosure.

[0273] According to one embodiment of the present disclosure, an apparatus (100) for manufacturing a metal-plastic laminate can determine process conditions of a surface acoustic coating apparatus (1500) using an artificial intelligence model. In this case, a control unit provided in the apparatus (100) for manufacturing a metal-plastic laminate and / or a control unit provided in the surface acoustic coating apparatus (1500) can determine process conditions of the surface acoustic coating apparatus (1500) using an artificial intelligence model.

[0274] The control unit may have an artificial intelligence model that has learned the correlation between the coating area and coating quality of the surface acoustic wave coating device (1500) and process variables.

[0275] In this case, coating quality may include coating thickness and coating uniformity.

[0276] Additionally, process variables may include at least one of the voltage applied to the first electrode (1560), the voltage applied to the second electrode (1570), the vertical position of the elastic wave coating module (1500A), and the vibration frequency of the actuator (1580).

[0277] The control unit can obtain coating area and coating quality information. Additionally, the coating area and quality information can be matched with process variable information. The process variable information can be estimated by calculating the coating area and quality information using the second model (2300).

[0278] According to one embodiment of the present disclosure, the second model (2300) is a model trained to infer process variables from coating area and coating quality, and can be trained with training data including coating area and coating quality in which process variables are labeled.

[0279] For example, the control unit can obtain result data of a coating performed according to predetermined process variables. Specifically, the control unit can obtain image data captured by the camera unit (15950). The control unit can label the obtained coating area and coating quality information together with the process variables during the coating performance and store them in the storage unit.

[0280] For a specific example, the control unit can acquire high-resolution image data captured by the camera unit (1595) by converting it into a digital signal. This image data includes droplet shape, spray pattern, and surface condition after coating during the spraying process, and can be collected as continuous images at 30 to 1000 frames per second. The control unit can quantitatively calculate coating area and coating quality information by analyzing the acquired image data through computer vision algorithms and image processing techniques. The coating area can be calculated in mm² units through pixel-based area analysis, and the coating quality can be analyzed using techniques such as grayscale analysis, texture analysis, and edge detection. Additionally, the control unit can label the acquired coating area and coating quality information along with process variables during the coating process and store them in the storage unit.

[0281] In addition, the control unit can use the stored data as training data.

[0282] The second model (2300) may be a model trained to output process variable information based on coating area and coating quality information.

[0283] The second model (2300) can be supervised using labeled training data. The second model (2300) may be composed of an input layer, an output layer, a hidden layer, an activation function, etc. For example, in one embodiment of the present invention, the hidden layer of the second model (2300) may include two layers and 32 nodes in each layer. The description of the hyperparameters described above is merely an example and the present invention is not limited thereto.

[0284] According to one embodiment of the present disclosure, the control unit may input information regarding the target coating area and the target coating quality to the learned second model (2300). In this case, a plurality of process variables may be derived as the result of the artificial intelligence model.

[0285] For example, as a result of the artificial intelligence model, a plurality of combinations of the voltage applied to the first electrode (1560), the voltage applied to the second electrode (1570), the vertical position of the elastic wave coating module (1500A), and the vibration frequency of the actuator (1580) can be derived (e.g., first process variable, second process variable, third process variable, etc.).

[0286] In this case, the control unit can determine process variables based on a predetermined policy. For example, the predetermined policy may be the lowest voltage. In this case, the control unit can determine the process variable (e.g., the second process variable) that has the lowest voltage applied to the first electrode (1560) among the combinations of process variables as the final process variable.

[0287] The predetermined policy can be set according to various optimization criteria. For example, in addition to the lowest voltage policy, criteria such as minimum energy consumption, shortest process time, highest production efficiency, or minimum equipment wear may be applied. For instance, if a minimum energy consumption policy is applied, the control unit can comprehensively consider the energy consumed and select a combination of process variables that minimizes total energy consumption.

[0288] FIG. 24 is a diagram illustrating training data for training an artificial intelligence model for a surface acoustic wave coating device according to one embodiment of the present disclosure.

[0289] The training data (2400) may include a first training data subset (2410) composed of coating area and coating quality information obtained by analyzing images captured by the camera unit (1595) and labeled with process variables, and a second training data subset (2420) composed of coating area and coating quality information entered by a user and labeled with process variables.

[0290] The first learning data subset (2410) is obtained through automatic analysis by the camera unit (1595), so it has the advantage of high consistency and reproducibility and the ability to quickly collect a large amount of data. However, due to the limitations of image analysis, it may not be possible to fully detect minute coating defects or complex surface characteristics. On the other hand, the second learning data subset (2420) consists of information obtained by skilled workers or quality inspectors through direct visual inspection, contact thickness measurement, adhesion tests, etc., and may include detailed quality characteristics that may be missed in camera analysis.

[0291] The first training data subset (2410) and the second training data subset (2420) may each consist of training data (2411, 2421), verification data (2413, 2423), and test data (2415, 2425). The training data may be used to train the second model (2300), and the second model (2300) may infer process variables based on the coating area and coating quality of the training data, and learn by backpropagating the error between the inferred process variables and the process variables labeled for the coating area and coating quality to the second model (2300). In the training of the second model (2300), the learning rate is set high at the beginning of the training epoch so that the second model (2300) does not overfit and the time consumed of computing resources required for training can be reduced. During the training epoch, if a certain standard of performance is satisfied through performance testing using test data at regular intervals, the learning rate can be adjusted to a lower level. This is to increase the final prediction accuracy by finely adjusting the weights of the second model (2300) through a small learning rate in the later stages of training. For general prediction performance, the second model (2300) can be trained with the training data (2411) of the first training data subset (2410), validated with the validation data (2423) of the second training data subset, and tested with the test data (2415) of the first training data subset and the test data (2425) of the second training data subset. Additionally, the second model (2300) can be trained with the training data (2421) of the second training data subset, validated with the validation data (2413) of the first training data subset (2410), and tested with the test data (2415) of the first training data subset (2410) and the test data (2425) of the second training data subset (2420).

[0292] According to one embodiment of the present disclosure, the second model (2300) may be implemented as an ensemble-based model. In this case, multiple different machine learning algorithms (e.g., random forest, support vector machine, neural network, gradient boosting) may each generate independent optimal solutions for the same input. Since each algorithm has different learning methods and characteristics, it may present various combinations of process variables for the same goal.

[0293] Additionally, the second model (2300) can be implemented as a probabilistic generative model. It learns the probability distribution of process variables for a given target condition by utilizing a Bayesian neural network or a Gaussian process. This model can generate multiple combinations of process variables with high probability by sampling, taking uncertainty into account.

[0294] Additionally, the second model (2300) can be implemented as a constraint-based optimization model. All possible solution spaces satisfying a given target quality can be explored by utilizing linear programming, integer programming, or genetic algorithms.

[0295] Additionally, the second model (2300) can be implemented as a hybrid model. By combining a deep learning model and a traditional optimization algorithm, a process variable region with a high probability of achieving target quality can be predicted first through a neural network, and then various optimal solutions within that region can be explored through an optimization algorithm. Furthermore, the second model (2300) is not limited to this and can be implemented in various ways.

[0296] FIG. 25 is a schematic diagram showing an artificial neural network according to one embodiment of the present disclosure.

[0297] Throughout this specification, the terms computational model, neural network, network function, neural network, and artificial intelligence model may be used interchangeably. A neural network may consist of a set of interconnected computational units, which may generally be referred to as nodes. These nodes may also be referred to as neurons. A neural network is composed of at least one node. The nodes (or neurons) constituting the neural networks may be interconnected by one or more links.

[0298] In a neural network, one or more nodes connected via links can form relative input and output node relationships. The concepts of input and output nodes are relative; any node in an output node relationship with respect to one node may be in an input node relationship with respect to another node, and vice versa. As described above, the input node versus output node relationship can be generated based on links. One or more output nodes may be connected to a single input node via links, and vice versa.

[0299] In a relationship between an input node and an output node connected through a single link, the value of the output node's data can be determined based on the data input to the input node. Here, the link interconnecting the input node and the output node may have a weight. The weight can be variable and can be varied by the user or an algorithm to enable the neural network to perform the desired function. For example, if one or more input nodes are interconnected to a single output node by respective links, the output node's value can be determined based on the values ​​input to the input nodes connected to the output node and the weights set on the links corresponding to each input node.

[0300] As described above, a neural network consists of one or more nodes interconnected through one or more links, forming input-output node relationships within the network. The characteristics of a neural network can be determined by the number of nodes and links within the network, the relationships between the nodes and links, and the weight values ​​assigned to each link. For example, if two neural networks exist with the same number of nodes and links but different weight values ​​for the links, the two neural networks may be recognized as different from each other.

[0301] A neural network can be composed of a set of one or more nodes. A subset of nodes constituting a neural network can form a layer. Some of the nodes constituting a neural network can form a layer based on their distances from an initial input node. For example, a set of nodes with a distance of n from an initial input node can form n layers. The distance from the initial input node can be defined by the minimum number of links that must be traversed to reach that node from the initial input node. However, this definition of a layer is arbitrary for illustrative purposes, and the degree of a layer within a neural network can be defined in a way different from that described above. For example, a layer of nodes may be defined by its distance from a final output node.

[0302] Initial input nodes may refer to one or more nodes within a neural network to which data is directly input without passing through links in their relationships with other nodes. Alternatively, in terms of link-based relationships between nodes within the neural network, they may refer to nodes that do not have other input nodes connected by links. Similarly, final output nodes may refer to one or more nodes within a neural network that do not have output nodes in their relationships with other nodes. Furthermore, hidden nodes may refer to nodes constituting the neural network that are neither initial input nodes nor final output nodes.

[0303] A neural network according to one embodiment of the present disclosure may have the number of nodes in the input layer equal to the number of nodes in the output layer, and may be a neural network in which the number of nodes decreases and then increases again as it progresses from the input layer to the hidden layer. Additionally, a neural network according to another embodiment of the present disclosure may have the number of nodes in the input layer less than the number of nodes in the output layer, and may be a neural network in which the number of nodes decreases as it progresses from the input layer to the hidden layer. Additionally, a neural network according to yet another embodiment of the present disclosure may have the number of nodes in the input layer greater than the number of nodes in the output layer, and may be a neural network in which the number of nodes increases as it progresses from the input layer to the hidden layer. A neural network according to yet another embodiment of the present disclosure may be a neural network in which the above-described neural networks are combined.

[0304] A deep neural network (DNN) may refer to a neural network that includes multiple hidden layers in addition to input and output layers. Using a deep neural network allows for the identification of the latent structures of data. That is, it is possible to identify the latent structures of photos, text, videos, voice, and music (e.g., what objects are present in a photo, what the content and emotions of a text are, what the content and emotions of a voice are, etc.). Deep neural networks may include convolutional neural networks (CNN), recurrent neural networks (RNN), autoencoders, Generative Adversarial Networks (GAN), restricted Boltzmann machines (RBM), deep belief networks (DBN), Q networks, U networks, Siamese networks, Generative Adversarial Networks (GAN), etc. The description of deep neural networks described above is merely illustrative and the present disclosure is not limited thereto.

[0305] In one embodiment of the present disclosure, the network function may include an autoencoder. The autoencoder may be a type of artificial neural network for outputting output data similar to the input data. The autoencoder may include at least one hidden layer, and an odd number of hidden layers may be placed between the input and output layers. The number of nodes in each layer may be reduced from the number of nodes in the input layer to an intermediate layer called a bottleneck layer (encoding), and then expanded symmetrically from the bottleneck layer to the output layer (symmetrically with respect to the input layer). The autoencoder may perform non-linear dimensionality reduction. The number of input and output layers may correspond to the dimension after preprocessing of the input data. In the autoencoder structure, the number of nodes in the hidden layer included in the encoder may have a structure in which the number of nodes decreases as it moves away from the input layer. If the number of nodes in the bottleneck layer (the layer with the fewest nodes located between the encoder and decoder) is too small, a sufficient amount of information may not be transmitted, so it may be maintained at a certain number or more (e.g., more than half of the input layer).

[0306] Neural networks can be trained in at least one of supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. The training of a neural network may be the process of applying knowledge to the neural network to perform a specific action.

[0307] Neural networks can be trained to minimize the error in their output. The training process involves repeatedly inputting training data into the network, calculating the error between the network's output and the target for the training data, and updating the weights of each node by backpropagating the error from the output layer to the input layer in a direction that reduces the error. In supervised learning, training data is used where the correct answer is labeled for each data point (i.e., labeled training data), whereas in unsupervised learning, the correct answer may not be labeled for each training data point. For instance, in the case of supervised learning for data classification, the training data may consist of data where each training point is labeled with a category. The labeled training data is input into the neural network, and the error can be calculated by comparing the network's output (category) with the labels of the training data. As another example, in the case of unsupervised learning for data classification, the error can be calculated by comparing the input training data with the neural network's output. The calculated error is backpropagated in the neural network (i.e., from the output layer to the input layer), and through backpropagation, the connection weights of each node in each layer of the neural network can be updated. The amount of change in the connection weights of each node being updated can be determined by the learning rate. The neural network's calculation of the input data and the backpropagation of the error can constitute a learning cycle (epoch). The learning rate can be applied differently depending on the number of iterations of the neural network's learning cycle. For example, a high learning rate can be used in the early stages of training to quickly achieve a certain level of performance and increase efficiency, while a low learning rate can be used in the later stages to improve accuracy.

[0308] In the training of neural networks, the training data is generally a subset of the real-world data (i.e., the data intended to be processed by the trained neural network). Consequently, a training cycle may exist where errors decrease on the training data but increase on the real-world data. Overfitting is a phenomenon where the network learns excessively on the training data, leading to increased errors on the real-world data. For example, a neural network trained on yellow cats might fail to recognize cats when seeing anything other than yellow, which can be considered a type of overfitting. Overfitting can act as a cause for increased errors in machine learning algorithms. Various optimization methods can be used to prevent this overfitting. To prevent overfitting, methods such as increasing the training data, regularization, dropout (which disables some nodes in the network during training), and the use of batch normalization layers can be applied.

[0309] FIG. 26 is a drawing for explaining a method, apparatus, and process for manufacturing a metal-plastic laminated FCCL film according to one embodiment of the present disclosure.

[0310] According to one embodiment of the present disclosure, a flexible copper clad laminate (FCCL) film with metal-plastic laminated thereon can be manufactured by the aforementioned apparatus, method, and process.

[0311] Specifically, a metal-plastic laminated FCCL film according to one embodiment of the present disclosure may be manufactured by at least one of an unwinding process (2610), a cleaning process (2620), a surface modification process (2630), a coating process (2640), a drying process (2650), a lamination process (2660), a forming process (2670), and a rewinding process (2680). One embodiment of each detailed process may be implemented by the apparatus, method, and fixture described above, but is not limited thereto.

[0312] In this case, the plastic member may include polyimide, and the metal member may include a copper member.

[0313] In the unwinding process (2610), the polyimide can be withdrawn from the wound roll. Also, the copper member can be withdrawn from the wound roll.

[0314] In the cleaning process (2620), pretreatment of the polyimide and copper components is performed. Specifically, ultrasonic cleaning using an ethanol solvent is performed for 3 to 5 minutes to remove oil and contaminants from the surface.

[0315] In the surface modification process (2630), adhesion is improved through surface activation of the cleaned polyimide and the copper member. Specifically, functional groups may be formed. This process may optionally apply at least one of oxygen plasma treatment, UV treatment, and corona treatment.

[0316] In the case of oxygen plasma treatment, the process is performed for 30 to 120 seconds with a power of 100W, and functional groups can be formed.

[0317] UV treatment can be performed for 10 to 30 minutes, and corona treatment can be performed for 60 to 120 seconds to form functional groups.

[0318] In the coating process (2640), an adhesive may be applied to at least one of the surface-modified materials. In this case, the adhesive may be applied to the polyimide, the adhesive may be applied to the copper member, or the adhesive may be applied to both the polyimide and the copper member.

[0319] In this case, the coating may be applied using an electrostatic spray coating (ESD) device, a slot die coater with a microgravure coater, a surface elastic wave coating device, or a double blanket gravure offset printing coater, but is not limited thereto. Specifically, polyimide and / or copper may be coated using an electrostatic spray coating device.

[0320] In this specification, the electrostatic spray coating device is used as a concept including an electrostatic spray coating device (ESD) and an electrostatic spray coating device equipped with an air curtain.

[0321] Some of the devices used in the coating process (2640) have been described in detail.

[0322] Additionally, the coated member may be dried in a drying process (2650). For example, if polyimide is coated, the polyimide may be dried; if copper member is coated, the copper member may be dried; and if both polyimide and copper member are coated, the polyimide and copper member may each be dried.

[0323] Specifically, the drying temperature (2650) can be set in the range of 100°C to 150°C, and more specifically, can be performed at 120°C. The drying time can be adjusted according to the thickness of the coating layer and the type of material, and can be set in the range of 5 minutes to 20 minutes, and specifically, can be set to 10 minutes. The drying process can be performed using any one of a hot air circulating dryer, an infrared dryer, a vacuum dryer, and an ultraviolet (UV) drying / curing method, but is not limited thereto.

[0324] In the lamination process (2660), a roll laminator may be used. For example, a polyimide and a copper member may be laminated at a temperature of 80°C to 150°C, a pressure of 1 MPa to 5 MPa, and a processing time of 30 minutes to 60 minutes. As a result, the polyimide and the metal member can form a strong molecular bond at the interface.

[0325] In the lamination process (2660), molecular bonding can be formed through surface-modified functional groups. Functional groups such as hydroxyl groups (-OH), carboxyl groups (-COOH), and / or amino groups (-NH2) are introduced to the surface of the copper member through a surface modification process. Additionally, functional groups such as hydroxyl groups (-OH), carboxyl groups (-COOH), and / or amino groups (-NH2) are introduced to the surface of the polyimide member through a surface modification process.

[0326] Under lamination conditions, the surface functional groups of the polyimide, the surface functional groups of the copper component, and the adhesive interact to form nanoscale molecular linkers. These nanolinkers generate chemical crosslinks between the two materials through covalent bonds, coordinate bonds, or strong intermolecular forces, resulting in the formation of an integrated joint at the molecular level. This nanolinker structure significantly enhances the strength and durability of the joint.

[0327] In the forming process (2670), the hybrid material with completed lamination can be formed into FCCL. For example, in the forming process, press forming can be performed for 30 minutes by applying a pressure of 60 MPa.

[0328] In another example, in the forming process (2670), the forming device can perform a molding process by pressing at a temperature of 120 to 200 degrees at a pressure of 40 MPa to 60 MPa for 30 minutes, and then cooling to 35 degrees or lower using water.

[0329] In the rewind step (S507), the processed metal-plastic laminated FCCL film can be wound into a roll.

[0330] The metal-plastic laminated Flexible Copper Clad Laminate (FCCL) film produced through the manufacturing apparatus, method, and / or process according to the present invention has improved dimensional stability and shape precision by forming a molecular bonding structure in which adhesive molecules chemically bond with the substrate surface, thereby effectively suppressing warping caused by thermal expansion. In addition, excellent surface smoothness and thickness uniformity are secured through a closely bonded interface structure at the molecular level, making it advantageous for processing fine circuit patterns.

[0331] Although the embodiments of the present invention have been described primarily in terms of the process, the present invention is not limited thereto and can be equally applied to the apparatus and method implementing the said process. Those skilled in the art will readily understand that the technical concept of the present invention is not limited to a specific process and can be implemented in various forms, such as the configuration of the apparatus performing the process, the method of controlling the apparatus, and individual manufacturing methods.

[0332] FIG. 27 is a drawing for explaining a method, apparatus, and process for manufacturing a metal-plastic laminated automotive battery pouch film according to one embodiment of the present disclosure.

[0333] According to one embodiment of the present disclosure, a metal-plastic laminated automotive battery pouch film can be manufactured by the aforementioned apparatus, method, and process.

[0334] Specifically, a metal-plastic laminated automotive battery pouch film according to one embodiment of the present disclosure may be manufactured by at least one of an unwinding process (2710), a cleaning process (2720), a surface modification process (2730), a coating process (2740), a drying process (2750), a lamination process (2760), a forming process (2770), and a rewinding process (2780). One embodiment of each detailed process may be implemented by the apparatus, method, and fixation described above, but is not limited thereto.

[0335] In this case, the plastic member may include cast polypropylene (CPP), and the metal member may include an aluminum member.

[0336] In the unwinding process (2710), the cast polypropylene can be withdrawn from the wound roll. Also, the aluminum member can be withdrawn from the wound roll.

[0337] In the cleaning process (2720), pretreatment of the cast polypropylene and aluminum components is performed. Specifically, ultrasonic cleaning using an ethanol solvent is performed for 3 to 5 minutes to remove oil and contaminants from the surface.

[0338] In the surface modification process (2730), adhesion is improved through surface activation of the cleaned cast polypropylene and aluminum members. Specifically, functional groups may be formed. This process may optionally apply at least one of oxygen plasma treatment, UV treatment, and corona treatment.

[0339] In the case of oxygen plasma treatment, the process is performed for 30 to 120 seconds with a power of 100W, and functional groups can be formed.

[0340] UV treatment can be performed for 10 to 30 minutes, and corona treatment can be performed for 60 to 120 seconds to form functional groups.

[0341] In the coating process (2740), an adhesive may be applied to at least one of the surface-modified materials. In this case, the adhesive may be applied to cast polypropylene, the adhesive may be applied to an aluminum member, and the adhesive may be applied to both the cast polypropylene and the aluminum member.

[0342] In this case, the coating may be applied using one of an electrostatic spray coating (ESD) device, a slot die coater with a microgravure coater, a surface acoustic wave coating device, or a double blanket gravure offset printing coater, but is not limited thereto. Specifically, cast polypropylene and / or aluminum members may be coated using a surface acoustic wave coating device.

[0343] In this specification, the electrostatic spray coating device is used as a concept including an electrostatic spray coating device (ESD) and an electrostatic spray coating device equipped with an air curtain.

[0344] Some of the devices used in the coating process (2740) have been described in detail.

[0345] Additionally, the coated member may be dried in a drying process (2750). For example, if cast polypropylene is coated, the cast polypropylene may be dried; if an aluminum member is coated, the aluminum member may be dried; and if both cast polypropylene and aluminum members are coated, the cast polypropylene and aluminum members may each be dried.

[0346] Specifically, the drying temperature (2750) can be set in the range of 100°C to 150°C, and more specifically, can be performed at 120°C. The drying time can be adjusted according to the thickness of the coating layer and the type of material, and can be set in the range of 5 minutes to 20 minutes, and specifically, can be set to 10 minutes. The drying process can be performed using any one of a hot air circulating dryer, an infrared dryer, a vacuum dryer, and an ultraviolet (UV) drying / curing method, but is not limited thereto.

[0347] In the lamination process (2760), a roll laminator may be used. For example, cast polypropylene and aluminum members may be laminated at a temperature of 80°C to 150°C, a pressure of 1 MPa to 5 MPa, and a processing time of 30 minutes to 60 minutes. As a result, the cast polypropylene and aluminum members may form a strong molecular bond at the interface.

[0348] In the lamination process (2760), molecular bonding can be formed through surface-modified functional groups. Functional groups such as hydroxyl groups (-OH), carboxyl groups (-COOH), and / or amino groups (-NH2) are introduced to the surface of the aluminum member through a surface modification process. Additionally, functional groups such as hydroxyl groups (-OH), carboxyl groups (-COOH), and / or amino groups (-NH2) are introduced to the surface of the cast polypropylene member through a surface modification process.

[0349] Under lamination conditions, surface functional groups of cast polypropylene, surface functional groups of aluminum components, and adhesives interact to form nanoscale molecular linkers. These nanolinkers create chemical crosslinks between the two materials through covalent bonds, coordinate bonds, or strong intermolecular forces, resulting in the formation of an integrated joint at the molecular level. The nanolinker structure significantly improves the strength and durability of the joint.

[0350] In the forming process (2770), the lamination-completed metal-plastic laminate can be formed into an automotive battery pouch. For example, in the forming process, press forming can be performed for 30 minutes by applying a pressure of 60 MPa.

[0351] In another example, in the forming process (2770), the forming device can perform a molding process by pressing at a temperature of 120 to 200 degrees at a pressure of 40 MPa to 60 MPa for 30 minutes, and then cooling to 35 degrees or lower using water.

[0352] In the rewind process (2780), the metal-plastic laminated automotive battery pouch film that has completed the process can be wound into a roll.

[0353] A metal-plastic laminated battery pouch film produced through the manufacturing apparatus, method, and / or process according to the present invention has improved dimensional stability and shape precision by forming a molecular bonding structure in which adhesive molecules chemically bond with the substrate surface, thereby effectively suppressing warping caused by thermal expansion. In addition, excellent surface smoothness and thickness uniformity are secured through a closely bonded interface structure at the molecular level, which is advantageous for processing fine circuit patterns.

[0354] Although the embodiments of the present invention have been described primarily in terms of the process, the present invention is not limited thereto and can be equally applied to the apparatus and method implementing the said process. Those skilled in the art will readily understand that the technical concept of the present invention is not limited to a specific process and can be implemented in various forms, such as the configuration of the apparatus performing the process, the method of controlling the apparatus, and individual manufacturing methods.

[0355] FIG. 28 is a drawing for explaining surface modification according to another embodiment of the present disclosure.

[0356] According to one embodiment of the present disclosure, a metal-plastic laminate manufacturing apparatus (100) can form functional groups on the surface of a plastic member or a metal member using at least one of an oxygen plasma device, a UV generator, and a corona generator. For example, the metal-plastic laminate manufacturing apparatus (100) can form hydroxy (OH) groups on the surface of a plastic member or a metal member.

[0357] Additionally, the metal-plastic laminate manufacturing device (100) can form functional groups by reacting a hydroxyl group (OH) formed on the surface of a plastic member or a metal member with a surface modification compound. In this case, the functional group may include an amino group (NH2).

[0358] The compounds disclosed in FIG. 28 disclose examples of surface modification compounds.

[0359] For example, the surface modification compound may include at least one of (3-isocyanatopropyl)trimethoxysilane, 3-(trimethoxysilyl)propyl acrylate, (3-glycidyloxypropyl)trimethoxysilane, 4-(2-aminoethyl)benzene-1,2-diol, and (3-mercaptopropyl)trimethoxysilane.

[0360] When surface modification is performed by a chemical reaction, at least some of the surfaces of the plastic member and / or metal member may have amino groups (NH2) formed as functional groups.

[0361] FIG. 29 is a drawing for explaining the components of an adhesive according to another embodiment of the present disclosure.

[0362] According to one embodiment of the present disclosure, an adhesive coated on a surface-modified plastic member and / or metal member may comprise various compounds. FIG. 29 discloses an example of various compounds.

[0363] For example, the adhesive may comprise at least one of bis(3-aminophenyl) sulfone, hexamethylene diisocyanate, methylene diphenyl 4,4'-diisocyanate, 1,6-diaminohexane, 1,7-octadiene diepoxide, triethylenetetramine, 1,4-butanediol diglycidyl ether, bis[4(glycidyloxy)phenyl] ethane, and tetraglycidyl-4,4'-diaminodiphenylmethane.

[0364] FIG. 30 is a drawing for explaining that a plastic member and a metal member are bonded by forming a molecular bond according to one embodiment of the present disclosure.

[0365] According to one embodiment of the present disclosure, a hydroxyl group (-OH) may be formed as a functional group on at least a portion of the surface-modified surface of a plastic member. Additionally, a silane compound may be formed by reacting 3-aminopropyltetraethoxysilane (APTES) with the hydroxyl group to enhance reactivity with an adhesive. In this case, the silane compound may include an aminopropyl group (a propylamine chain connected to a -Si-O-Si- structure).

[0366] In addition, hydroxyl groups (-OH) may be formed as functional groups on at least a portion of the surface-modified surface of the metal member. Additionally, a silane compound formed by reaction with the hydroxyl groups may be formed. In this case, the silane compound may include an aminopropyl group (a propylamine chain connected to a -Si-O-Si- structure).

[0367] According to one embodiment of the present disclosure, the adhesive may comprise a diisocyanate compound. For example, the adhesive may comprise hexamethylene diisocyanate (HDI). Hexamethylene diisocyanate may be incorporated into the adhesive and coated onto a plastic member and / or a metal member.

[0368] According to one embodiment of the present disclosure, when laminated, the isocyanate group of the HDI can react with the amino group on the plastic surface and the amino group on the metal surface, respectively, to form a urea bond (-NH-CO-NH-). In this case, the HDI molecule acts as a crosslinker to chemically connect the silane coupling agent of the plastic member and the silane coupling agent of the metal member.

[0369] FIG. 31 is a drawing for explaining that a plastic member and a metal member are bonded by forming a molecular bond according to another embodiment of the present disclosure.

[0370] According to one embodiment of the present disclosure, a hydroxyl group (-OH) may be formed as a functional group on at least a portion of the surface-modified surface of a plastic member. Additionally, a silane compound formed by reacting with the hydroxyl group may be formed. In this case, the silane compound may include an aminopropyl group (a propylamine chain connected to a -Si-O-Si- structure).

[0371] In addition, hydroxyl groups (-OH) may be formed as functional groups on at least a portion of the surface-modified surface of the metal member. Additionally, a silane compound formed by reaction with the hydroxyl groups may be formed. In this case, the silane compound may include an aminopropyl group (a propylamine chain connected to a -Si-O-Si- structure).

[0372] The adhesive may contain two compounds. For example, the adhesive may contain a diglycidyl ether compound and a diamine compound. As a specific example, the adhesive may contain bisphenol A diglycidyl ether and 4,4'-diaminodiphenylsulfone.

[0373] According to one embodiment of the present disclosure, a metal-plastic laminate manufacturing apparatus (100) can generate a multi-stage epoxy-amine reaction by gradually increasing the temperature starting from room temperature, through 80°C, to 160°C.

[0374] A diglycidyl ether compound and a diamine compound react to form a cross-linked structure, and the formed cross-linked structure can bond with amino groups formed on the surface of a plastic member and amino groups formed on the surface of a metal member. As a result, the surface of the metal member and the surface of the plastic member can be chemically bonded.

[0375] FIG. 32 is a drawing illustrating that a plastic member and a metal member are bonded by forming a molecular bond according to another embodiment of the present disclosure.

[0376] According to one embodiment of the present disclosure, a hydroxyl group (-OH) may be formed as a functional group on at least a portion of the surface-modified surface of a plastic member. Additionally, a silane compound may be formed by reacting with the hydroxyl group. In this case, the silane compound may include an aminopropyl group (a propylamine chain connected to a -Si-O-Si- structure).

[0377] In addition, hydroxyl groups (-OH) may be formed as functional groups on at least a portion of the surface-modified surface of the metal member. Additionally, a silane compound may be formed by reacting with the hydroxyl groups. In this case, the silane compound may include an aminopropyl group (a propylamine chain connected to a -Si-O-Si- structure).

[0378] According to one embodiment of the present disclosure, the adhesive may comprise a polymer in which monomers, namely glycidyl acrylate and butyl acrylate, are randomly arranged. In this case, the polymer of glycidyl acrylate and butyl acrylate may be formed by a radical polymerization reaction. Through a chain reaction initiated by a radical initiator, the double bonds of each monomer are opened and converted into single bonds, and as radicals are transmitted in a chain, the monomers are continuously bonded to form a polymer. Here, the degrees of polymerization of the polymer, n and m, may be repeating units of 2 to 10.

[0379] In addition, the adhesive may contain a diamine compound. As a specific example, the adhesive may contain 4,4'-diaminodiphenylsulfone.

[0380] According to one embodiment of the present disclosure, an epoxide of a polymer in which glycidyl acrylate and butyl acrylate are randomly arranged reacts with a diamine compound to form a cross-linked structure, and the formed cross-linked structure can be bonded to an amino group formed on the surface of a plastic member and an amino group formed on the surface of a metal member. As a result, the surface of the metal member and the surface of the plastic member can be chemically bonded.

[0381] FIG. 33 is a drawing illustrating that a plastic member and a metal member are bonded by forming a molecular bond according to another embodiment of the present disclosure.

[0382] According to one embodiment of the present disclosure, at least a portion of the surface-modified surface of a plastic member may have an amine group (NH2) formed as a functional group. Additionally, at least a portion of the surface-modified surface may include an isocyanate (NCO) group as a functional group.

[0383] In addition, an amine group (NH2) may be formed as a functional group on at least a portion of the surface-modified surface of the metal member. In addition, an isocyanate (NCO) group may be included as a functional group on at least a portion of the surface-modified surface.

[0384] According to one embodiment of the present disclosure, by applying heat and pressure to a surface-modified plastic member and a metal member, an isocyanate (NCO) group and an amine can react to form a urea bond.

[0385] Urea bonds can directly connect plastic and metal components at the molecular level through strong covalent bonds. This chemical bonding can provide significantly improved bonding strength compared to conventional physical bonding methods.

[0386] In this specification, "coating agent," "coating liquid," and "adhesive" are used as concepts that can refer to the same object. That is, they refer to a substance applied to a coating target by a coating device, and terms such as "coating agent," "coating liquid," and "adhesive" may be interpreted as interchangeable terms referring to one another in the context.

[0387] According to one embodiment of the present disclosure, the aforementioned devices may be controlled by a control unit. For example, the aforementioned devices may be controlled according to process variables determined by an artificial intelligence model. Specifically, the electrostatic spray coating device (1100) may perform coating based on the voltage applied to the electrode part (1250a), the vertical position of the spray head module (1250), and the vertical position of the air curtain part (1250e), which are determined by the artificial intelligence model. Additionally, the surface acoustic wave coating device (1500) may perform coating based on the voltage applied to the first electrode (1560), the voltage applied to the second electrode (1570), the vertical position of the acoustic wave coating module (1500A), and the vibration frequency of the actuator (1580), which are determined by the artificial intelligence model.

[0388] It should be understood that the specific order or hierarchy of steps in the presented processes is merely an example of exemplary approaches. It should be understood that, based on design priorities, the specific order or hierarchy of steps in the processes may be rearranged within the scope of the invention. The appended method claims provide various step elements in a sample order, but do not imply limitation to the specific order or hierarchy presented.

[0389] The method according to the present invention described above can be produced as a program to be executed on a computer and stored on a computer-readable recording medium, and examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

[0390] Computer-readable recording media are distributed across networked computer systems, allowing computer-readable code to be stored and executed in a distributed manner. Furthermore, functional programs, codes, and code segments for implementing the above method can be easily inferred by programmers skilled in the art to which the present invention pertains.

[0391] Furthermore, although preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above. It is understood that various modifications can be made by those skilled in the art without departing from the essence of the invention as claimed in the claims, and such modifications should not be understood individually from the technical spirit or perspective of the present invention.

[0392] Furthermore, although preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above. It is understood that various modifications can be made by those skilled in the art without departing from the essence of the invention as claimed in the claims, and such modifications should not be understood individually from the technical spirit or perspective of the present invention.

[0393] The scope of the present invention is defined by the claims set forth below, and all modifications or variations derived from the meaning and scope of the claims and equivalent concepts thereof should be interpreted as being included within the scope of the present invention.

[0394] delete Explanation of the symbols delete

Claims

Claim 1 An apparatus for manufacturing a metal-plastic laminate comprises: a surface modification device for modifying the surfaces of a plastic member and a metal member to form functional groups; an adhesive coating device for coating an adhesive on at least one surface-modified surface among the surface-modified plastic member and the metal member; and a laminator for laminating the metal member and the plastic member; wherein the adhesive coating device comprises a first adhesive coating device for coating the plastic member and a second adhesive coating device for coating the metal member, one of the first adhesive coating device and the second adhesive coating device is a surface elastic wave coating device and the other is a gravure offset printing coater, and the gravure offset printing coater comprises a blanket roller on which an adhesive is applied to a surface and which transfers the applied adhesive to one surface of the coating target by rotating in one direction while the surface contacts one surface of the coating target. A device for manufacturing a metal-plastic laminate, comprising: a gravure offset printing roller that transfers the adhesive into a pre-formed pattern to the blanket roller; and a surface elastic wave coating device comprising: an actuator that converts the adhesive into microdroplets; a housing formed with an adhesive inlet and a gas inlet; a first electrode disposed on the upper part of the housing; and a second electrode disposed opposite to the first electrode; wherein the gas injected through the gas inlet assists in the transport of the microdroplets, and the microdroplets are coated on a coating target by an electric field generated by the first electrode and the second electrode. Claim 2 delete Claim 3 An apparatus for manufacturing a metal-plastic laminate, wherein the blanket roller comprises: an outer skin made of a material having a predetermined hardness and having a cylindrical space inside; and an inner skin made of a material having a lower hardness than the outer skin and filled in the inner space of the outer skin. Claim 4 In paragraph 3, an apparatus for manufacturing a metal-plastic laminate, wherein the thickness of the outer skin is thinner than the thickness of the inner skin. Claim 5 An apparatus for manufacturing a metal-plastic laminate, wherein, in claim 4, the surface modification apparatus comprises at least one of an oxygen plasma apparatus, a UV generator, and a corona generator, and the functional group comprises at least one of a hydroxyl group and an amino group. Claim 6 In claim 5, the surface modification device is a device for manufacturing a metal-plastic laminate, wherein the surface modification device reacts a hydroxyl group formed on the surface of the plastic member and the metal member with a surface modification compound to form an amino group. Claim 7 In claim 6, the apparatus for manufacturing a metal-plastic laminate, wherein the adhesive comprises a diglidyl ether compound and a diamine compound. Claim 8 In claim 6, the apparatus for manufacturing a metal-plastic laminate, wherein the adhesive comprises a diisocyanate compound. Claim 9 In claim 6, the apparatus for manufacturing the metal-plastic laminate further comprises a drying device for drying a member coated with the adhesive, wherein the drying device dries the coated adhesive until it reaches a thickness of 10 nm or less. Claim 10 In claim 9, the apparatus for manufacturing the metal-plastic laminate further comprises a cleaning device for cleaning the plastic member and the metal member prior to surface modification. Claim 11 In claim 1, the apparatus for manufacturing a metal-plastic laminate comprises a first adhesive coating device that applies an adhesive to one surface of a plastic member. Claim 12 An apparatus for manufacturing a metal-plastic laminate, wherein the adhesive coating apparatus comprises a second adhesive coating apparatus for applying an adhesive to one surface of a metal member in claim 1. Claim 13 In claim 1, the adhesive coating device comprises a first adhesive coating device for applying an adhesive to one surface of a plastic member and a second adhesive coating device for applying an adhesive to one surface of a metal member, for manufacturing a metal-plastic laminate. Claim 14 In claim 10, the device for manufacturing the metal-plastic laminate further comprises a forming device for forming a laminated member. Claim 15 A method for manufacturing a metal-plastic laminate comprises: a step of modifying the surfaces of a plastic member and a metal member using a surface modification device to form functional groups; a step of coating an adhesive on at least one surface-modified surface of the surface-modified plastic member and the metal member using an adhesive coating device; and a step of laminating the metal member and the plastic member using a laminator; wherein the adhesive coating device comprises a first adhesive coating device for coating the plastic member and a second adhesive coating device for coating the metal member, one of the first adhesive coating device and the second adhesive coating device is a surface elastic wave coating device and the other is a gravure offset printing coater, and the gravure offset printing coater comprises a blanket roller on which an adhesive is applied to a surface and which transfers the applied adhesive to one surface of the coating target by rotating in one direction while the surface contacts one surface of the coating target. A method for manufacturing a metal-plastic laminate, comprising: a gravure offset printing roller that transfers the adhesive into a pre-formed pattern to the blanket roller; and a surface elastic wave coating device comprising: an actuator that converts the adhesive into microdroplets; a housing formed with an adhesive inlet and a gas inlet; a first electrode disposed on the upper part of the housing; and a second electrode disposed opposite to the first electrode; wherein the gas injected through the gas inlet assists in the transport of the microdroplets, and the microdroplets are coated on a coating target by an electric field generated by the first electrode and the second electrode. Claim 16 delete Claim 17 A method for manufacturing a metal-plastic laminate according to claim 15, wherein the blanket roller comprises: an outer skin made of a material of a predetermined hardness and having a cylindrical space inside; and an inner skin made of a material of lower hardness than the outer skin and filled in the inner space of the outer skin. Claim 18 A process for manufacturing a metal-plastic laminate comprises: a step in which a surface modification device modifies the surfaces of a plastic member and a metal member to form functional groups; a step in which an adhesive coating device coats an adhesive on at least one surface-modified surface among the surface-modified plastic member and the metal member; and a step in which a laminator laminates the metal member and the plastic member; wherein the adhesive coating device comprises a first adhesive coating device for coating the plastic member and a second adhesive coating device for coating the metal member, one of the first adhesive coating device and the second adhesive coating device is a surface elastic wave coating device and the other is a gravure offset printing coater, and the gravure offset printing coater comprises a blanket roller on which an adhesive is applied to a surface and which transfers the applied adhesive to one surface of the coating target by rotating in one direction while the surface contacts one surface of the coating target. A process for manufacturing a metal-plastic laminate, comprising: a gravure offset printing roller that transfers the adhesive into a pre-formed pattern to the blanket roller; and a surface elastic wave coating device comprising: an actuator that converts the adhesive into microdroplets; a housing formed with an adhesive inlet and a gas inlet; a first electrode disposed on the upper part of the housing; and a second electrode disposed opposite to the first electrode; wherein the gas injected through the gas inlet assists in the transport of the microdroplets, and the microdroplets are coated on a coating target by an electric field generated by the first electrode and the second electrode. Claim 19 delete Claim 20 A process for manufacturing a metal-plastic laminate according to claim 18, wherein the blanket roller comprises: an outer skin made of a material having a predetermined hardness and having a cylindrical space inside; and an inner skin made of a material having a lower hardness than the outer skin and filled in the inner space of the outer skin.

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